The secret of the best mountain bikes? No ballast and 100% perfect technology! The ingenious engineers at X-BIONIC® have been following this principle for many years. And their innovations set standards around the world. The X - BIONIC pants for mountain bikes are one of the highlights of the X - BIONIC®® laboratory. High technology in its purest form is hidden under the sober exterior: patented protective and climatic functions, a sweat management system to improve performance and perfect ergonomics for difficult rides on rough terrain. If you are looking for maximum performance, you will find it in the X-BIONIC® Mountain Bike pants.