ALPINE RAPIDFIT(R) 80L BACKPACK

-RAPIDFIT (R) ADJUSTMENT- 9 stage height adjustment.  Integration of breathable TECHFABRIC padding, keeping you cool on the trail. -6 COMPRESSION STRAPS- For tying up your pack or hanging sleeping bag, tent, hammock, and other gears. Elastic bands on them can keep the extra strap from dangling all around the pack. -HYDRATION SYSTEM COMPATIBLE- Hydration access on a side of the pack with water bladder sleeve in the main compartment. -EXPANDABLE COLLAR- An extension collar with two drawstrings on the top can expand the pack and increase the main compartment capacity by 5 liters. -SAFETY WHISTLE- Integration in top buckle system. -PHONE/CAMERA INTEGRATION- 2 storage compartments in hip straps. -ULTRA LIGHTWEIGHT- 3.72lbs/1.69kg. -WATER RESISTANT- Up to 99% protection of internal objects.