Maxxis fat plus mtb tubethe maxxis fat plus inner tube is designed to fit the needs of 26 fat bikers or 27 5 riders the inner tube is available with either presta or schrader valves and is made from 1mm thin butyl rubber for extra puncture resistance while still maintaining a thin and flexible tube wall features 10 mm thin walls fat bike or 27 5 specific presta schrader valves available weight from 364g 275x2 5 3 presta to 44g 275x3 8 5 schraderbuy maxxis wheels tyres fr