Extremely impermeable.
Unique mix of rubber: less air loss means less reinflating.
Reliability: During the fabrication process, each tube's ability to hold air is tested twice.
40 mm Schrader valve.
Dimensions: 12 X 1.75/2.25.
Weight: 80 g.
Inner Ttube Type : Standard
Max Width : 2.25"
Min Width : 1.75"
Valve : Schrader
Valve length : 40 mm
Wheel Sizes : 12"