HIGH-QUALITY 18" X 2.125" KIDS BIKE REPLACEMENT WHITE TIRES AND INNER TUBES - Thick, heavy-duty, and dependable, this set of 2 tires and 2 tubes is perfect for school-age kids bikes, especially for 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 18” KIDS BIKES WITH WHITE TIRES PERFECT FOR GIRLS’ BIKES - Highly compatible brands include JOYSTAR, COEWSKE, Royalbaby, Dynacraft, and Disney’s Frozen Kids Bike models, and more! Universally compatible, you can use these tire and tube sets interchangeably on various 18-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. HEAVY DUTY 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 HEAVY DUTY 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. A More Affordable Tire and Tube Replacement Branded bikes generally cost more than generic bikes. The same is true for OEM replacement parts. And if your replacement tires and tubes still get constant punctures and flats, it’s time to rethink your choices. Why not opt for more affordable replacement tires and tubes? The same quality, specifications, and even more durable! So, if your child owns any of these bike models, it’s time to switch to our exact replacement tires and tubes! ●JOYSTAR Fairy 18 Inch Girls Kids’ Bike ●JOYSTAR ANGEL 18 Inches 3-9 Years Old Girls Bike ●JOYSTAR PARIS Girls 18 Inch Kids Bike ●JOYSTAR 18 Inches Starry Girls Kids Bike ●COEWSKE 18 Inches Steel Frame Kids’ Bike (Little Princess and Regular Styles) ●Royalbaby Stargirl Girls 18 Inches Girls Kids’ Bike ●Royalbaby Bunny Girls 18 Inches Girls Kids Bike ●Royalbaby Chipmunk MK 18 Inches Sports Bike for Girls ●Royalbaby Buttons 18 Inches Kids Bike for Boys and Girls ●Royalbaby Jenny Princess 18 Inches Girls Kids Bike ●Glimmer Kid Bike Quick Connect 18-Inch ●Sea Star Girls’ EZ Build Bike 18-Inch ●Heartbeat Girls’ Bike 18-Inch ●Unleash Girls’ Bike 18-Inch ●Dynacraft Duzy Customs Skyquest 18” Bike ●Dynacraft Everest Misty 18” Bike ●Dynacraft Barbie 18” Bike ●Dynacraft 500 Mysterious 18” Bike ●Dynacraft Shopkins 18” Bike ●Dynacraft Vertical Mysterious 18” Bike ●Dynacraft Sweetheart 18” Bike