Replacement Tires And Inner Tubes For Most Children'S Bikes, Including MADE HEAVY DUTY FROM QUALITY MATERIALS: Our Inner tubes are made from premium, 100% butyl, BPA and odor free rubbers, It?s our job to make dependable and durable inner tubes and we do it right! Count on CalPalmy! HIGH-QUALITY 14" X 2.125" KIDS BIKE REPLACEMENT TIRES AND INNER TUBES - Thick, heavy-duty, and dependable, this set of 2 tires and 2 tubes is perfect for both boys? and girls? bikes. With an expandable width that can accommodate 1.95-inch, 2-inch, and 2.125-inch tires, these inner tubes can withstand sharp impacts and minor punctures. The tires have distinct and thick tread that is perfect for rough riding on different types of surfaces. FITS MOST 14? KIDS BIKES WITH TIRES PERFECT FOR BOYS? AND GIRLS? BIKES - Highly compatible brands include Schwinn, JOYSTAR, COEWSKE, Royalbaby, Dynacraft, and more! Universally compatible, you can use these tire and tube sets interchangeably on various 14-inch kids? bikes! EXTRA-THICK AND PREMIUM-QUALITY BUTYL RUBBER FOR MAXIMUM RIDING COMFORT - Upgrade your kid?s riding experience with high-quality inner tubes that have superior shock, impact, and vibration dampening capabilities. The thick, strong, and high-durable butyl rubber make of these inner tubes is the perfect damping material to reduce vibrations and dissipate shock caused by bumps and rough patches on the road or pavement. EXPLOSION-PROOF INNER TUBES - Safety is our priority. CalPalmy aims to produce products that are safe and are of high-quality. That's why our range of replacement inner tubes are both tear-resistant and self-sealing to prevent huge punctures that can turn explosive. Protect yourself and your tires with our explosion-proof inner tubes. IMPORTANT NOTE: This replacement kit is an aftermarket product produced by CalPalmy (TM). It meets or exceeds the performance of OEM replacements (based on in-house testing). We do not have any affiliation with or endorsement from any of the manufacturers mentioned.