10 inch zipper to attach to the back collar of your jacket/ski/rain coat- if you have the other half of the zipper already… Pictures of YKK zipper with slider on the hood. Cinch cord on the outside, center of hood / a Velcro fastened cinch on the inside of hood / elastic cinches on both sides of hood, next to your ears or cheeks. The snaps are designed to go into a collar of a jacket. If you don’t have that style, they could hang loose, be pinned or sewn in, or add Velcro. I have scores of these, leftover from a corporate gifting project where the hoods were removed. The hoods are solid black with waterproofing material and seam taping. If I figure out what jacket they snap into, I’ll update listing. One size, 10” zipper.