From the manufacturer

Made for long days on the move, the Gen 2 Distance 8 Pack is built with UHMWPE ripstop body fabrics and an entirely unique harness system that moves with you. 

Stretch-woven "wings" extend from the back panel along the sides to provide a secure and chafe-free fit. Easy to use Z-Pole storage can be deployed on the move, while dual side compression allows you to modify carry capacity as you go. The pack is made with BD SETT (Stitchless Edge Taping Technology) that improves fit, comfort and durability on the move. The Distance 8 has an internal zip pocket, side stretch stash pockets, and a single zip pocket on shoulder strap. 

Features

• Innovative harness layout with Stitch-less Edge Taping Technology for superior shoulder strap comfort, movement, and weight reduction
• On-the-go Z-Pole storage and secure Z-pole sleeves built into the pack
• Dual side compression
• Custom developed UHMWPE ripstop body fabrics
• Two soft flask pockets (soft flasks not included), one zip and two stretch shoulder strap pockets
• Two side stash pockets and one internal zip pocket with key clip