'A fabric and hookandloop strap to carry essentials in case you flat' Carry a tube CO2 cartridge and tire levers. An alternative to AMS silicone strap and to backpacks or fanny packs. Benefits: Smooth material that wraps around your bike frame tubes taking care of them Non-slip features for both frame and essentials Light and doesn't absorb water or mud Universal fitting: all bike frames Durable strong and soft Withstands high and low temperatures Specifications: Polyester fabric and hookandloop system 550 x 30 mm 21.7 x 1.2 inches 32 grams 1.13 ounces