Black DIamond JetForce Pro Booster 35L is the perfect backpack for long days in the backcountry. Featuring the latest progression of the innovative JetForce Technology, the new JetForce Pro avalanche airbag with PIEPS technology is lighter, smaller and now features Bluetooth capabilities. 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 split pack has a splitboard strap and 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 10-liter, 25-liter, and 35-liter booster pack, which you can attach to the JetForce system for more versatility.