Schwalbe SV13 Tubes are for labelled for 26" tyres, and widths from 1.5" up to 2.4". As recommended by Compass for their "Rat Trap Pass" 26in tyres.

Specifications
Fits Tyre Sizes: 26" (Width 1.5" to 2.4")
Valve Type: Presta

Mfr Claimed Weight
190g