Mammut Back Protector Black one size. This certified back protector is designed to fit all new Nirvana packs. It features a highly flexible construction that utilizes multi-impact SAS-Tec foam providing outstanding shock absorption without adding noticeable weight or restricting mobility while freeriding. This specialized foam provides gentle cushioning when force is applied slowly and maximum rigidity in the event of a sharp impact or high-speed fall ensuring optimal protection in all situations. Specifications for Mammut Back Protector: Manufacturer: Mammut Color: Black Size: One Size Features of Mammut Back Protector Compatible with all Nirvana Snow Packs Package Contents: Mammut Back Protector Mammut 2810-00520-0001-1: Back Protector Black one size