Ortovox says about the Clasp Spine Protector
Even greater protection: The CLASP SPINE PROTECTOR is a separate spine protector specially designed for FREERIDE SERIES backpacks. Capable of withstanding multiple impacts, the FLEXIBLE PROTECTOR MADE FROM SAS-TEC FOAM is concealed in a separate pocket on the inside of the backpacks, ready for use when required. With no NOTICEABLE WEIGHT DIFFERENCE or restriction of movement, it offers MAXIMUM PROTECTION OF THE SPINE. During slow force applications the foam has a cushioning effect thanks to soft compression. In the event of a high-impact or high-speed fall, the foam’s microstructure undergoes minimal compression, becoming instantly rigid and providing reliable protection. The CLASP SPINE PROTECTOR is the optimal enhancement for maximum spine protection when freeriding.