This altura waterproof helmet cover fits snugly over your helmet to keep you dry as you ride plus the highly reflective trim and bright yellow colour will make sure you39re kept seen whatever the road conditions the altura waterproof helmet cover does exactly what it says on the tin fully waterproof as well as breathable this helmet cover is compatible with a variety of helmets for a snug close fit this altura helmet cover features a highly reflective trim to add to your visibility in low