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Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
The Olu 120 allows everyone to observe without putting their head under water, to talk, to share while enjoying the underwater landscapes
Size guide

To take your measurements:
|
Chest size: (in cm) |
84-87 | 88-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 | 154-159 |
| Size US | XS | XS/S | S | S/M | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL |
| Size EU | XS | S | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL | 4XL / 5XL | 5XL |
|
70-73 | 74-77 | 78-81 | 82-85 | 86-89 | 90-95 | 96-100 | 101-105 | 106-111 | 112-117 | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | |
| EU size - Europe | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
| Universal size | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
Waist size: (in cm) |
20.25-20.85 | 20.86-21.5 | 21.51-22.15 | 22.16-22.8 | 22.81-23.45 | 23.46-24.1 | 24.11-24.75 |
| Universal size | XS | S | M | L | XL | 2XL | 3XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
|
Chest size: (in cm) |
76-79 | 80-83 | 84-87 | 86-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
|
Under Bust Size: (in cm) |
63-67 | 68-72 | 73-77 | 78-82 | 83-87 | 88-92 | 93-97 | 98-102 | 103-107 | 108-112 | 113-117 |
| Size | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 |
| UK size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
For high end swimwear with back ties, if your size is not available, you can wear another size with similar band size.
Examples: with a size 95C , you can wear a 100B by tightening the rear link more , or a 90D by tightening the back link less .
| Chest size in cm) | ||||||||
| Section A-A | 72-74 | 77-79 | 82-84 | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 |
| Cut A | 75-77 | 80-82 | 85-87 | 90-92 | 95-97 | 100-102 | 105-107 | 110-112 |
| Cut B | 78-80 | 83-85 | 88-90 | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 |
| Cut C | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 | 106-108 | 111-113 | 116-118 |
| Cut D | 84-86 | 89-91 | 94-96 | 99-101 | 104-106 | 109-111 | 114-116 | 119-121 |
| Cut E | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 | 112-114 | 117-119 | 122-124 |
| Cut F | 90-92 | 95-97 | 100-102 | 105-107 | 111-113 | 115-117 | 120-122 | 125-127 |
| Cut G | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 | 118-120 | 123-125 | 128-130 |
|
Waist size: (in cm) |
57-58 | 58-62 | 63-65 | 66-69 | 70-73 | 74-77 | 78-84 | 85-90 | 91-96 | 97-102 | 103-108 | 109-114 | 115-120 | 121-128 | 129-132 | 133-139 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
| Size: (cm) |
56-59 | 60-63 | 64-67 | 68-71 | 72-75 | 76-79 | 80-93 | 84-89 | 90-95 | 96-101 | 102-107 | 108-113 | 114-119 | 120-125 | 126-131 | 132-137 |
| Hipsize: (cm) |
86-89 | 90-93 | 94-97 | 98-101 | 102-105 | 106-109 | 110-113 | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144-149 | 150-155 | 156-161 | 162-167 |
| EU size - Europe | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
| Universal size | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
16.25-17.1 | 17.11-17.95 | 17.96-18.8 | 18.81-19.5 | 19.51-20.1 | 20.11-20.7 | 20.71-21.3 | |
| Universal size | 2XS | XS | S | M | L | XL | 2XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
| Height: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-152 | 153-162 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Size: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-150 | 151-160 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Hand size: (in cm) |
13.9-14.9 | 14.91-15.9 | 15.91-16.9 | 16.91-17.8 | 17.81-18.6 | 18.61-19.45 |
| Universal size | 4 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
|
Head measurement: (in cm) |
41.1 | 43.6 | 44.9 | 45.7 | 47.4 | 48.6 | 49.7 | 50.6 |
| Size | 3 Months | 6 Months | 9 Months | 12 Months | 18 Months | 2 Years | 3 Years | 4 Years |
| Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |
Size guide

To take your measurements:
|
Chest size: (in cm) |
84-87 | 88-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 | 154-159 |
| Size US | XS | XS/S | S | S/M | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL |
| Size EU | XS | S | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL | 4XL / 5XL | 5XL |
|
70-73 | 74-77 | 78-81 | 82-85 | 86-89 | 90-95 | 96-100 | 101-105 | 106-111 | 112-117 | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | |
| EU size - Europe | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
| Universal size | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
Waist size: (in cm) |
20.25-20.85 | 20.86-21.5 | 21.51-22.15 | 22.16-22.8 | 22.81-23.45 | 23.46-24.1 | 24.11-24.75 |
| Universal size | XS | S | M | L | XL | 2XL | 3XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
|
Chest size: (in cm) |
76-79 | 80-83 | 84-87 | 86-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
|
Under Bust Size: (in cm) |
63-67 | 68-72 | 73-77 | 78-82 | 83-87 | 88-92 | 93-97 | 98-102 | 103-107 | 108-112 | 113-117 |
| Size | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 |
| UK size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
For high end swimwear with back ties, if your size is not available, you can wear another size with similar band size.
Examples: with a size 95C , you can wear a 100B by tightening the rear link more , or a 90D by tightening the back link less .
| Chest size in cm) | ||||||||
| Section A-A | 72-74 | 77-79 | 82-84 | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 |
| Cut A | 75-77 | 80-82 | 85-87 | 90-92 | 95-97 | 100-102 | 105-107 | 110-112 |
| Cut B | 78-80 | 83-85 | 88-90 | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 |
| Cut C | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 | 106-108 | 111-113 | 116-118 |
| Cut D | 84-86 | 89-91 | 94-96 | 99-101 | 104-106 | 109-111 | 114-116 | 119-121 |
| Cut E | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 | 112-114 | 117-119 | 122-124 |
| Cut F | 90-92 | 95-97 | 100-102 | 105-107 | 111-113 | 115-117 | 120-122 | 125-127 |
| Cut G | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 | 118-120 | 123-125 | 128-130 |
|
Waist size: (in cm) |
57-58 | 58-62 | 63-65 | 66-69 | 70-73 | 74-77 | 78-84 | 85-90 | 91-96 | 97-102 | 103-108 | 109-114 | 115-120 | 121-128 | 129-132 | 133-139 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
| Size: (cm) |
56-59 | 60-63 | 64-67 | 68-71 | 72-75 | 76-79 | 80-93 | 84-89 | 90-95 | 96-101 | 102-107 | 108-113 | 114-119 | 120-125 | 126-131 | 132-137 |
| Hipsize: (cm) |
86-89 | 90-93 | 94-97 | 98-101 | 102-105 | 106-109 | 110-113 | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144-149 | 150-155 | 156-161 | 162-167 |
| EU size - Europe | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
| Universal size | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
16.25-17.1 | 17.11-17.95 | 17.96-18.8 | 18.81-19.5 | 19.51-20.1 | 20.11-20.7 | 20.71-21.3 | |
| Universal size | 2XS | XS | S | M | L | XL | 2XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
| Height: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-152 | 153-162 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Size: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-150 | 151-160 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Hand size: (in cm) |
13.9-14.9 | 14.91-15.9 | 15.91-16.9 | 16.91-17.8 | 17.81-18.6 | 18.61-19.45 |
| Universal size | 4 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
|
Head measurement: (in cm) |
41.1 | 43.6 | 44.9 | 45.7 | 47.4 | 48.6 | 49.7 | 50.6 |
| Size | 3 Months | 6 Months | 9 Months | 12 Months | 18 Months | 2 Years | 3 Years | 4 Years |
| Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |
Snorkeling observation buoy, olu 120 fish
pastel mint green / M / 8485067
Decathlon Bagatelle
Decathlon Bagatelle
80832
Moka
Maurice
Decathlon Beau Plan
Beautiful Roundabout Plan
21001
Grapefruits
Maurice
Free home delivery from Rs 2,500
We offer several delivery methods:
Free home delivery from Rs 2,500
We offer several delivery methods:
Return and exchange
You have up to 90 days to return your items.
More information via this lien.
Return and exchange
You have up to 90 days to return your items.
More information via this lien.
Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
The Olu 120 allows everyone to observe without putting their head under water, to talk, to share while enjoying the underwater landscapes
Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
The Olu 120 is a new way to snorkel. This Decathlon invention makes snorkeling easier. The Olu 120 is an inflatable product that allows you to observe the underwater world without putting your head underwater, while being supported by an inflatable structure. Snorkeling becomes more user-friendly: with your head above water, you can move, talk, and interact, all while observing!
The Olu 120 comes in 3 sizes. Why? We rest on it to observe, so it is necessary to have several sizes in order to be in the right position to observe, depending on the size of each person. The size is therefore dependent on the user's weight. Size S: weight for those under 40 kg Size M: For a weight between 40 kg and 65 kg Size L: For those over 65 kg
The clips on the sides of the Olu 120 are used to attach Olu 120s side by side. Stay together, watch over your children, or simply enjoy several thanks to this small, very easy-to-use accessory!
The OLU 120 inflates in 2 stages for 2 reasons: - the 1st, to limit the appearance of fogging. This is where the OLU 120 innovates by establishing an air circuit that prevents the appearance of fogging during inflation. - the 2nd, to ensure your safety, if by accident one of the chambers is pierced, the other will be there to support you. The large black valve at the back of the product is there for easy and quick deflation.
The Olu 120 is constructed with a transparent film that allows for clear, distortion-free viewing. To enjoy it the longest: pamper it! Avoid anything that could scratch the film or cloud it, such as sand, stones, sunscreen or other abrasive or greasy products.
Depending on the position of the sun you may have slight reflections in the viewing chamber. Do not panic, just use your hands to shade and you can continue observing without discomfort.
The air circuit prevents the appearance of fogging in the Olu 120, but it is however possible that you will see small spots of fogging on the top of the screen, especially when coming out of the water. Don't worry: once in the water, the fog disappears. Indeed, all the walls are at the temperature of the water and the steam evaporates.
Size S: weight < 40kg - 430 grams. Size M: 40kg < weight < 65kg - 520 grams. Size L: 65kg < weight - 610 grams.
The Olu 120 allows everyone to observe without putting their head under water, to talk, to share while enjoying the underwater landscapes
Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
The Olu 120 is a new way to snorkel. This Decathlon invention makes snorkeling easier. The Olu 120 is an inflatable product that allows you to observe the underwater world without putting your head underwater, while being supported by an inflatable structure. Snorkeling becomes more user-friendly: with your head above water, you can move, talk, and interact, all while observing!
The Olu 120 comes in 3 sizes. Why? We rest on it to observe, so it is necessary to have several sizes in order to be in the right position to observe, depending on the size of each person. The size is therefore dependent on the user's weight. Size S: weight for those under 40 kg Size M: For a weight between 40 kg and 65 kg Size L: For those over 65 kg
The clips on the sides of the Olu 120 are used to attach Olu 120s side by side. Stay together, watch over your children, or simply enjoy several thanks to this small, very easy-to-use accessory!
The OLU 120 inflates in 2 stages for 2 reasons: - the 1st, to limit the appearance of fogging. This is where the OLU 120 innovates by establishing an air circuit that prevents the appearance of fogging during inflation. - the 2nd, to ensure your safety, if by accident one of the chambers is pierced, the other will be there to support you. The large black valve at the back of the product is there for easy and quick deflation.
The Olu 120 is constructed with a transparent film that allows for clear, distortion-free viewing. To enjoy it the longest: pamper it! Avoid anything that could scratch the film or cloud it, such as sand, stones, sunscreen or other abrasive or greasy products.
Depending on the position of the sun you may have slight reflections in the viewing chamber. Do not panic, just use your hands to shade and you can continue observing without discomfort.
The air circuit prevents the appearance of fogging in the Olu 120, but it is however possible that you will see small spots of fogging on the top of the screen, especially when coming out of the water. Don't worry: once in the water, the fog disappears. Indeed, all the walls are at the temperature of the water and the steam evaporates.
Size S: weight < 40kg - 430 grams. Size M: 40kg < weight < 65kg - 520 grams. Size L: 65kg < weight - 610 grams.
The Olu 120 allows everyone to observe without putting their head under water, to talk, to share while enjoying the underwater landscapes
Our design teams have designed this observation buoy for children and adults who discover the coastal seabed without putting their head under water.
4.39/5
23 reviews
I love !!!
I have been using this buoy in Martinique for a month (before I used your mask) I have observed fish, corals and especially turtles very clearly. In addition, it reassures me because with it I move away from the boat in complete peace of mind, which I did not do with the mask. I even take it to the beach to observe the small fish on the shore. It's very fun. Many bathers do not know about this product and I lent them to several people who were pleasantly surprised at one glance.
All right
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