The AceCamp 3908 Lightweight Vinyl Poncho is cut for maximum coverage to keep you as dry as possible if you get stuck in a downpour, and is large enough to cover you and your backpack (keeping your lunch nice and dry, too). The poncho pulls over the head and has side straps for easy putting on and taking off, and is one size fits all. This AceCamp 3908 Lightweight Vinyl Poncho is made of vinyl material to protect you against the weather.