Stop flat tires with the Slime Bike Tube Protector Liners. The one-size-fits-most liner installs easily for strong puncture protection. FEATURES: Fits bike tire sizes: 12"-26" x 1.5"-2.125" Physically blocks nails, thorns and debris to protect the tube from punctures Easy to install between the tube and tire Includes 2 liners Dimensions: 216.mm L x 38mm W x .92mmD Weight: 82 grams