Slime Self Sealing Tube 20x1.5-2.125"Slime Self Sealing Smart Bike Tube 20x1.5-2.125". Self-Sealing Smart Bike Tubes with SLiME Inside. All SLiME Smart Tubes are factory-filled with a precise volume of SLiME Tube Sealant. Smart Tubes instantly seek out and seal punctures as they occur, preventing flats, repeatedly and continuously for up to two years. Ride without worries.716281006258
