IMPAC is the name economical tire and tube range that have been produced by SCHWALBE to compete with other economical brands, which quality isn't always very high. IMPAC can offer better quality at low prices. Quality inner tube for 28" (700) road bicycle tires with Presta (SV) valve.
For tire sizes from 700x20C to 700x28C (from 20-622 to 28-622)
Also from 27 x 7/8 to 27 x 1.00 (from 22-630 to 25-630)
Valve: Presta (SV)
Valve length: 40 mm
Weight: 105 g