Polyurethane mask, Thermoformed bi-material foam, Rubber finish, Class 2 glasses, The grey double screen also improves color perception, making them suitable for all terrains., Lenses are naturally anti-fogging and prevent condensation, Snow goggles are compatible with all helmets and and can be worn over corrective glasses, Elasticated strap in the back, Adjustable elastic band to improve hold, One size Head 51-55 cm = size 8-12 years Height: 8 cm Width 16 cm Profile: 7 cm (2.7 inches)