This bounce free MTB back protector backpack is made for the adrenaline junkie. The PATRIOT 15 protects both your back and your gear when bombing the steepest hills or shredding the roughest terrain. This bike backpack gives you total confidence with the removable multi-compliant CE-certified SAS-TEC central back protector (SC-1/CB52) made of flexible viscoelastic foam with memory effect that returns to its original shape after impact or deformation.