Our Go-to Climbing Pack For Rainier Dedicated, durable, and designed for ice cragging, mixed ascents, and cold-weather expeditions, the Mission pack is Black Diamond's toughest alpine pack. Featuring an updated BD X-rip 420d fabric with UTS coating, these packs are now ultra ...Our Go-to Climbing Pack For Rainier Dedicated, durable, and designed for ice cragging, mixed ascents, and cold-weather expeditions, the Mission pack is Black Diamond's toughest alpine pack. Featuring an updated BD X-rip 420d fabric with UTS coating, these packs are now ultra-durable, designed to withstand season after season of mountain abuse.