Features & Highlights: • Multi-Size Fit: Broad compatibility fits 26-inch bicycle tires ranging from 1.75" up to 2.25" width (ETRTO 45/57-559). • Heavy-Duty Construction: Extra-thick butyl rubber construction provides enhanced puncture resistance, durability, and shock absorption compared to standard thin tubes. • Standard Valve Type: Features a standard Schrader Valve (AV / auto valve) for easy inflation at home or gas stations. • Superior Air Retention: High-grade rubber reduces air loss over time, keeping your tires properly inflated longer. • Wide Compatibility: Perfect replacement inner tubes for mountain bikes (MTB), cruiser bikes, commuter/city bikes, and e-bikes. Condition Notes: Brand new in original packaging.