Take preventative measures for an enjoyable ride on your next outing with this Slime Flat Protector Tube Liner. Lightweight and strong, it creates an effective barrier between your liner and the tire. It physically blocks nails, thorns, glass and debris to protect the tube from punctures. This bike tire tube protector, available in a one size fits most, installs quickly and easily. It lets you keep the focus on your destination by allowing you to continue to move along safely.