Stop Flats Tire Liner (2). Don't let flats slow you down. These tire liners are made of durable, lightweight polyurethane and provide a protective layer between road hazards and the inner tubes on your bike tires.

Features

• Guaranteed to Stop Flats
• America's #1 Tire Liner
• Stops thorns broken glass road & trail debris
• 2 Layers Tough - 2 times the protection
• Weighs less than liquid fills
• Durable and Puncture resistant