BLACK DIAMOND PIEPS JETFORCE BT PACK 25L The revolutionary JetForce Technology is still rechargeable and travel-friendly, and features multiple deployments, with automatic deflation to create an air pocket, and has an automated self-diagnosis, but now the updated, lower-profile system is positioned lower, which improves the way the pack carries. With the addition of Bluetooth connectivity, you can update the software directly through the PIEPS app on your smartphone, as well as personalize settings. The 25-liter pack features a dedicated avy-tool pocket and plenty of storage for extra layers, water and additional gear, plus the pack is modular, giving you the option of purchasing a 25-liter, or 35-liter booster pack, which you can attach to the JetForce system for more versatility. FEATURES: Redesigned JetForce technology is smaller, lighter and repositioned for better carrying capabilities Flexible modular zip-on system JetForce Technology is built in; rechargeable, travel-friendly and extremely durable Bluetooth connectivity allows for easy software and system updates with a smartphone Dedicated avy tools pocket and single ice axe attachment Tuck-away diagonal ski carry allows airbag to deploy while skis are attached HiLo helmet holder, hipbelt stash pocket and internal accessory pocket Redesigned leg strap is retractable with easy-to-use carabiner clip for quick attachment Refelctive design elements Front loading accessory pocket