Restrap Race Top Tube Bag - Short 1.5L Black. The Adventure Race Top Tube Bag has been designed as a durable and lightweight bag for ultra-distance riding audaxes and races. It uses X21 a technical waterproof fabric 6oz nylon lining YKK zips and reflective detailing that adds visibility during night time riding. The bag is held firmly in place with a three-point Hypalon fitting. A new universal headset fitting and internal plastic structure keeps the bag upright stable and secure and is designed to work with all headsets including bikes with a low stack height. An adjustable frame fitting means the bag will work with most frame bags and all Restrap Frame Bags.