Restrap's handmade dry bags feature tape-sealed seams to make them 100% waterproof, keeping all your belongings dry within the holsters, in bags or simply by themselves. The 7 Litre Race Dry Bag is made from 6oz waterproof coated nylon. It is designed to work seamlessly with the Race Saddle Bag and Race Aero Bar Bag and includes reflective detailing to aid visibility during night time riding.