![Schwalbe Inner Tube AV15 - 700 x 18/28 - Schrader - 40mm](http://senacrecycles.co.uk/cdn/shop/products/p5c73f28e950957.06384035_42337f46-3e54-474c-b0fb-865ca901c2a7.jpg?v=1705159355&width=1445)
- Extremely airtight! The Butyl rubber compound prevents pressure loss and fewer occassions to inflate. Extremely reliable! Quality control for safer cycling: Each tube is checked twice at the factory to ensure safer cycling. Having the correct pressure means fewer punctures and reduced rolling resistance