Review on Stay Cool and Safe with BERN Summer Watts EPS Helmet - Matte Black (Size: Large) by Sean Tops

I ordered a large helmet because my friend has the exact same helmet and inside is a L-XL sticker. When I received the L helmet I ordered, it was HUGE! It was too big for my friend's head. I went to a real bike shop that sold these helmets and the right size to fit my friend's L-XL helmet was medium! I have no idea what's up with their sizes but make sure to go to the store because their sizes are everywhere.