Pirelli Cinturato SmarTUBE X BIKESPORTZ and the shorts include a

and the shorts include a 2-layer

Excellent balance of grip

Hotrock A1 FSR - 2006-2010

Professional reviewers consistently praise its near-instant shifting speed

Main Material: 63% Polyester

Pirelli Cinturato SmarTUBE X BIKESPORTZ and the shorts include aThe Cinturato SmarTUBE X is Pirelli's latest innovation in the world of tubes designed to offer performance enhancing solutions for your endurance rides and gravel adventures. The Cinturato SmarTUBE X is made with TPU, a material that can save up to 70% of the weight while being stronger than butyl as a raw material. This product is 3 times thicker than a standard SmarTUBE, giving you the benefit of being agile while still being extremely protected.