A Fatbike tube has a completely different dimension than a normal bicycle tire. Maxxis Fatbike and Plus-Size tubes therefore also use a special wall thickness of 1.0 mm, which can cope with all the requirements of use with the typically low air pressure of Fatbike tyres.
Without manufacturer's recommendation
suitable for tyre size inch (Diam. x Width): 27,5 x 3,8 - 5,0 Inch suitable for tyre size ETRO: 95-584 – 120-584 Valve Type: French Valve Valve Length: 36 mm Material: Butyl