Vittoria Air Liner Tubeless Insert Road Small 25mm Model=Spyre Road Disc Brake Caliper Just like an astronaut puts Just like an astronaut puts on that orange space suit twists their helmet into place and hops into that shuttle to send it to the freakin’ moon pull on a set of these Shuttle Runner gloves at the beginning of any ride and be prepared to SEND IT This allows you to have all the control you need to tackle the most demanding of trails with full confidence In the event of air loss the Air Liner insert is designed for run flat use The Air Liner is a foam based reusable insert for tubeless tires designed to protect the rim enhance grip and prevent punctures