Gregory Mountain Products Men's Optic 58 Liter Ultralight Multi-Day Hiking Backpack | Backpacking, Hiking, Travel | Full-Featured Ultralight Construction, Raincover Included, Padded Adjustable Straps

Longer distances and winter temperatures require extra room, and the Optic 58 gives you that additional capacity without compromising your ultralight priorities. Proper load management, moisture-wicking ventilation, and intelligent features keep you comfortable and mentally balanced from sea level to the High Sierra, because efficient trail travel involves more than a weight claim.AEROSPAN SUSPENSION: AeroSpan suspension with EVAP moisture wicking shallow-depth ventilated back panel.FOCUSFORM COMPONENTS: Ventilated, dual-density FocusForm shoulder harness and extra supportive hip belts with targeted comfort zones.LEAF-SPRING LUMBAR PAD: Leaf-Spring Lumbar pad for comfortable, energy-saving load transfer.INTERNAL ALUMINUM FRAME: Ultra-light 7001 aluminum perimeter frame with anti-barreling support.CUSTOM FITTED RAINCOVER: Included rain cover stows in the top pocket for quick access in unexpected showers.REMOVABLE LID: Removable top zippered pocket to shed ounces and swap-in included ultra-light weather flap to stay protected (stows in top pocket).SUNGLASS QUICKSTOW SYSTEM: Sunglass storage system on shoulder harness for quick, secure and scratch-free access to your shades without taking the pack off.QUICK ACCESS WATER BOTTLE POCKET: On-the-go water bottle stow access on both the right and left sides.FRONT STRETCH MESH POCKET: Oversized, durable front stretch mesh pocket for quick access organization.ZIPPER HIP BELT POCKETS: Dual zippered hip belt pockets provide secure, easy to access storage.STRETCH MESH SIDE POCKETS: Dual stretch mesh side pockets with Large capacity for bottles, camp sandals, trekking poles.ADJUSTABLE ATTACHMENT LOOPS: Dual adjustable attachment loops and upper shock locks for trekking poles or ice axes.ULTRALIGHT COMPRESSION STRAPS: V-Compression system on side and bottom of bags.PASS-THROUGH POCKET: Lower side compression pass-through on side pocket for over/under option.GEAR LOOPS: Gear attachment points on top pocket and main body.