Osprey Stratos 36 Large Backpack - Shale Throwing Set HR zone alarms to

Set HR zone alarms to let you know when your heart rate is climbing faster than you are—or when your training regimen is too easy

Real-time guidance: heart rate and calories burned

M2S uses 3*CR123 or 3*RCR123

Weight: 93 grams

Osprey Stratos 36 Large Backpack - Shale Throwing Set HR zone alarms toThe Stratos 36 carries all you need for a long day out and even a light overnighter. Designed for a full day of adventure, this top loader features a large front zippered pocket, front panel access to the main compartment, a fixed top pocket with two zippered organization pockets and zippered mesh pockets on the hipbelt. Key Features Backpanel and Suspension Harness pocket Hydration Compatible Ice Ax Attachment InsideOut Compression Integrated