ETRTO: 40-355 - 18" x 1.50 47-355 - 18" x 1.75 32-369 - 17" x 1.1/4 37-390 - 18" x 1.3/8 37-400 - 18" x 1.3/8 (450x35A) Weight: 95g. Extremely air-tight! Less air loss means having to inflate less. A unique rubber mixture makes it possible. Extremely reliable! Each SCHWALBE tube is individually examined twice at the factory to ensure air-tightness. Special quality control that prevents unpleasant surprises.
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.