Cyclists, this stretchy helmet cover from SANDIAN is a simple but useful accessory. It's made from a breathable, stretchy fabric that fits over most standard bike helmets (half-face style). The main job? To keep bugs, bees, and debris from getting into the vents of your helmet while you're riding – a surprisingly annoying problem! It has an integrated drawstring with a lock button to cinch it tight under your chin so it won't fly off. It's not waterproof, but it helps with airflow and adds a bit of style with its dye-sublimation printed designs. Also helps protect your helmet's finish from scratches. Lightweight and easy to pack.