The Revelation keeps your gear organized, protected and riding close to your body, whether your day includes touring or ski mountaineering. For making quick grabs, its modified panel-load design features a back panel zipper. Your shovel and probe stow separately in their own quick access pockets and the exterior attachment points for skis, ice tools, crampons and helmet are simple yet dependable. To comfortably handle large loads, it uses a Y-rod aluminum stay and thermoformed back panel, waistbelt and shoulder straps. Details: BD's unique Y-Rod aluminum stay, with no welded points, provides support where needed, yet enough flexibility to give total freedom of movement. Cut and bent from aluminum rod stock, the Y-Rod offers a better strength-to-weight ratio than more common aluminum pack stays. BD's SilNylon is silicone and PU-coated nylon—a unique material with a high strength-to-weight ratio, water-shedding capability and the ability to self-heal small punctures. SilNylon is used throughout our pack line for its light weight and excellent strength. Ergo-molded foam back panels, waistbelts and shoulder straps are anatomically shaped to eliminate pressure points while transferring the load evenly over areas of contact. BD's ergo-molded suspensions allow for a custom-fit feel with excellent support. Two-layer Hypalon accessory loops are incredibly durable and streamlined as opposed to the clutter of traditional webbing accessory loops. Grippy and extremely tough, Hypalon is ideal for attaching ice and snow gear to your pack. Features: Colors: Red Weights: (3 LB 1 OZ) 35L, (3 LB 5 OZ) 45L Volumes: (2,136 CU IN) 35L, (2,746 CU IN) 45L Front panel compartment for avy essentials Unique attachment points for skis, ice tools, crampons and helmet Y-Rod aluminum stay and thermoform carry system for a stable pack