OUTSTANDING QUALITY: Steerling Tire Co. Premium Explosion Proof Inner Tubes Are Made Of 1.2mm Thick Butyl Rubber That Absorbs Shocks On The Bumpy Road Giving The Baby A Comfy And Quiet Ride. PERFECT RELACEMENT: Ideal BOB Stroller Tire Replacement Set For All 3 Tires Of The BOB Revolution Stroller (SE, Flex, Pro) & Stroller Strides. Fits Single And Double Strollers. PROPER FIT: The Front And Back Inner Tube Can Also Be Used On Baby Trend Jogger Series, Mountain Buggy Terrain, Bumbleride Speed, Baby Jogger, Burley Solstice, Thul Urban Glide, Graco Roadmaster/FastAction Fold/Modes/Relay, Joovy Zoom, Schwinn Interval SAFETY FOR YOU AND BABY: Made from natural 100% butyl rubber, performance is our focus when designing inner tubes and tire replacements for baby strollers. We have consciously tested these in extreme weather conditions and terrains to ensure punctures don't stop your jog. The thickness of these tubes will prevent most flats, but if a funny thorn is found, the self-sealing feature will instantaneously create an airtight seal around the puncture to prevent explosive flats - always! EASY INSTALLATION: The Replacement Inner Tube Is Extremely Convenient And Simple To Install And Detach. Please Check The Position Of The Valve, And Make Sure You Install Them In The Right Direction. Have Any Problem Please Feel Free To Contact Us. Are you bothered about not finding a good quality inner tube on the market? Steerling Tire Co. offers the best Explosion-Proof Inner Tubes for your stroller, bike and trailer. Unique Inner Tube - Using Upgraded Material That Provide Strong Wear Resistance, Good Air Tightness & Delay Aging. Thicker Butyl Rubber Than Standard Inner Tubes, Safe To Use For All Seasons. Heat Resistance, Delay Aging And Longer Service Life, Usually Not Needing To Refill For 3-6 Months. Customer Please Note: This Universal Inner Tube Is Compatible For Most Of All Jogging Strollers, Including Rear Wheels/Tires Of The Following Strollers: Mountain Buggy Terrain Stroller (16" rear tires and 12.5" front tire model), Bob Revolution (PRO/Flex/SE), Bob Stroller Strides, Bumbleride Speed Stroller, Baby Jogger Summit X3, Single & Double Strollers, Burley Solstice Jogging Stroller, Thul Urban Glide, Single & Double Strollers, Graco Roadmaster, Graco FastAction Fold Jogger Stroller, Graco Modes Jogger Stroller, Graco Relay Jogger Stroller, Joovy Ultralight Stroller, Schwinn Interval Stroller. The Compatibility Chart Is For Reference And To Provide Support. It Is Customer Responsibility To Compare The Shape, Size, Measurement With Your Old/Stock Parts Before Order. If You Could Not Confirm, Just Contact Us, Our Technician Will Help You Find What You Need. Material : Natural Butyl Rubber. Size: Two 16'' x 1.5/1.75 Rear Inner Tubes + One 12.5'' x 1.75/2.15 Front Inner Tube.