Decathlon | Adult Tempered Glass Snorkelling Mask 520 turquoise.

Dive into crystal-clear views with the **520 Snorkelling Mask**. Featuringdurable **tempered glass** for maximum safety and clarity, this mask offers awide field of vision. The soft skirt ensures a comfortable, leak-free fit.Easy to adjust and stylish in turquoise, it's your perfect underwatercompanion. See more, explore more! **Key benefits:** * Field of vision: 1 * Field of vision: field of vision measured for a size M * Durability: Better vision and scratch resistance thanks to the single-lens tempered glass. * Easy dressing: Fabric strap that doesn't pull out hair. Built-in snorkel clip. * Anatomic design: Comfortable & waterproof thanks to silicone skirt. Mobile adjustable tube strap * internal volume: 2 * internal volume: A smaller internal volume makes submerged descents easier**Technical information:**Cut: For children from 6 to 10 years, we recommend size S. From the age of 10,size M is recommended for thin faces and size L covers larger faces. ; How tochoose the right mask size: You need to position your mask on your facewithout the strap, and press with your hands to make sure it's firmly inplace, blocking your breath. If the mask "suctions" properly, and stays stuckto your face, it's perfect and means that it is your size and will bewatertight. If it unsticks and falls off, that means that air is gettingthrough, and so water will get in, so you'll need to try another size oranother mask. ; Avoid the appearance of mist in your mask: New mask: Wash yourmask with washing-up liquid and warm water, using your fingers, to remove anygrease. Do not use a sponge. Before each use, spit into your mask and wipe thelens with your fingers to rinse the mask. Dampen your face with the water tolimit heat loss between the skin and the lens of your mask, as this willreduce mist. Use an anti-fogging spray to completely eliminate mist. ;Silicone: Silicone is an extremely flexible material. A silicone skirtconforms gently to the contours of the face, creating a watertight seal. ;Tempered glass lens (sizes M & L), polycarbonate lens (size S): Tempered glassis two to five times more durable than traditional glass. It is more scratchresistant than a polycarbonate lens. In case of a major shock, it breaks intosmall pieces, reducing the risk of a major accident. For the safety ofchildren, size S is of polycarbonate.