Kairfree Puncture-Resistant Cycle Tyre Liner - 20 x 1.75"

Easy to fit puncture resistant liner that makes your bike virtually puncture-proof whilst retaining the advantages of pneumatic tyres. Suits 20 x 1.75" junior mountain bike tyres.
The Kairfree liner fits snugly into your tyre and guarantees up to a 95% reduction in punctures. You retain the traditional inner tube but protect it with Kairfree's unique lightweight formulation. This means that you don't lose out on performance or comfort, you just say goodbye to irritating punctures that always seem to happen at the worst possible time