Alopek Boat Coat Material: 90% Neoprene, 10% Nylon Size: XL Zipper closure is not a problem. The zipper can be opened and closed from both top and bottom. It will be folded and shipped in a cardboard box. Used only a few times and stored. There is some wear and tear, so please refrain from purchasing if you are extremely concerned about the condition. Please also check the profile.