This is what Schwalbe has to say about these tubes:
"Extremely air-tight! Less air loss means having to inflate less often. Our 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."
We recommend always keeping a few spares around the house as they can be difficult to find in a pinch. It is especially recommended to bring a few for touring and traveling with your bike trailer.
Available in Presta and Schraeder.
For Presta valve's it is recommended that you get the tube with a Presta Valve Stem Saver if using the tube on a rim drilled for Schraeder valves.
12" x 1.75-2.25"
Schwalbe wants to make the warranty claim process as simple as possible. After examining the tire or tube in question and assessing it to be a possible warranty situation, please follow these simple steps:
SCHWALBE NORTH AMERICAInclude the following information with the item that is being shipped back:
1350 Slater Road, Unit 1
Ferndale, WA 98248
ATTN: WARRANTY DEPARTMENT RVN: xxxx