Slime Pro Smart Tubes offer the renowned sealing power of standard Slime tubes but with a lighter weight. They are engineered to instantly and repeatedly seal punctures for up to two years. This specific tube is sized at 27.5" x 2.00-2.40 and features a Schrader Valve. It effectively seals punctures up to 1/8 (3mm) and provides flat tyre protection for a duration of up to 2 years. The tube comes pre-filled with an environmentally-friendly Slime tube sealant. Slime Pro Smart Tubes are pre-installed with Slime, delivering maximum puncture protection for longer rides, faster times, and a guarantee against flat tyres. The Microfibers within Slime's patented formula are propelled by escaping air towards the puncture. There, they accumulate to form a plug, halting air loss and sealing tread area punctures up to 3mm. The sealant is non-toxic and non-flammable, and cleans up easily with water.