27.5 x 3.5 - 4.8 Schwalbe Inner Tube No. 21XXL (SV21XXL) Valve:Presta Valve This feature allows for a

This feature allows for a secure and hassle-free application

Navigate various terrains with ease

Great comfort

Size: 26 x 1 3/8 (37-590)

Whether commuting to work

27.5 x 3.5 - 4.8 Schwalbe Inner Tube No. 21XXL (SV21XXL) Valve:Presta Valve This feature allows for aWho makes the best bike inner tubes? In our opinion its got to be Schwalbe. They go further in every way to give you the highest quality bike inner tubes on the market. Why not upgrade to Schwalbe tubes today with Tube King. Schwalbe Number: No. 21XXL Schwalbe SV21XXL (Presta Valve) Inner Tube Size: 27. 5" x 3. 50 4. 80" Fits tyre sizes: 27. 5 x 3. 50 27. 5 x 3. 60 27. 5 x 3. 75 27. 5 x 3. 80 27. 5 x 3. 90 27. 5 x 4. 00 27. 5 x 4. 10 27. 5 x 4. 20 27.