Very high-quality Mountain Bike inner-tubes prefilled with Joe's Super Sealant- the world's leading tire sealant, prevents flats by instantly sealing punctures in the tread area of the tire up to 3mm. 220gram inner-tubes prefilled with 120 grams Joe's Super Sealant (total 340 grams for 26" tube).

Tips:

• If you get a puncture, always SPIN the wheel to distribute the sealant.
• If spinning does not work, find the hole, in turn, the wheel so the hole will face the ground.
• Add more air if necessary.
• Enjoy the rest of your ride!