The OP Exos 58 backpack is incredibly lightweight, and with AirSpeed

suspension is also ultra comfortable. Ideal for thru hiking and super

lightweight backpacking.

The AirSpeed suspension uses aluminum stays to tension a breathable

mesh backpanel so that air can circulate across your back. BioStretch

shoulder straps and hipbelt use mesh covered slotted foam to provide

ventilation, support and comfort.

Zippered mesh hipbelt pockets and stretch energy gel pocket on the

shoulder strap give you quick access to frequently needed items. Stow-

on-the-Go trekking pole attachment on the left side allows you to

quickly attach poles to free up your hands without taking off your

backpack.

Four position sternum strap adjusts up or down to where it is most

comfortable for you. Sternum strap buckle has a built in whistle for

safety. Load lifter straps allows you to adjust more weight on either

the shoulders or hips for increased comfort. Waist straps pulls from

the top and bottom of the hip belt for increased support and comfort.

Vertical zippered rear pocket provides quick access to a separate

storage compartment. Inside the main compartment is a hydration sleeve

and port to accommodate hydration reservoirs. Quick-release strap

secures the reservoir and keeps it from sagging. Hydration sleeve is

large enough for a 128 ounce reservoir.  

Mesh side pockets and stretch woven rear stuff-it pocket provide plenty

of external storage. Side compression straps enable you to adjust the

volume to perfectly fit the contents of your pack. Quick-attach bungee

loops enable you to strap ice axes or trekking poles to the pack.

Sleeping pad straps are located on the rear bottom.

The removable lid has two zippered pockets (1 external and 1 under the

lid) and locks down with twin buckles for quick access to the main

compartment. A compression/rope carry strap under the lid increases

functionality. Superlight 7mm webbing side compressionStow-on-the-Go trekking pole attachmentRear stretch woven shove-it pocketReflective detail on rear pocketCord tie-off pointsUnder-lid pocketVertical zippered rear pocketZippered mesh hipbelt pocketsSleeping pad strapsSide mesh pockets with inner or outer compression Small Weight: 2 lb 7 oz (1110g)Volume: 3300 ci (55L)Size: Fits torso lengths less than 18.5" Medium Weight: 2 lb 8 oz (1140g)Volume: 3500 ci (58L)Size: Fits torso lengths between 18"- 20.5”Large Weight: 2 lb 10 oz (1185g)Volume: 3700 ci (61L)Size: Fits torso lengths greater than 20"Small: torso lengths less than 18.5" Medium: torso lengths between 18"- 20.5" Large: torso lengths greater than 20"

Measure the length of your spine from C7 vertebra (the knobby bone at

the base of your neck) to level with your iliac crest (the top of your

hip bones).

       Features

Ultralight Ultra ComfortableAirSpeed BackpanelHipbelt & Shoulder PocketsHandles Loads up to 35 lbs  Superlight 7mm webbing side compressionRear stretch woven shove-it pocketReflective detail on rear pocketCord tie-off pointsUnder-lid pocketVertical zippered rear pocketZippered mesh hipbelt pocketsSleeping pad strapsSide mesh pockets with inner or outer compression Small Weight: 2 lb 7 oz (1110g)Volume: 3300 ci (55L)Size: Fits torso lengths less than 18.5" Medium Weight: 2 lb 8 oz (1140g)Volume: 3500 ci (58L)Size: Fits torso lengths between 18"- 20.5”Large Weight: 2 lb 10 oz (1185g)Volume: 3700 ci (61L)Size: Fits torso lengths greater than 20"

Small: torso lengths less than 18.5" Medium: torso lengths between 18"- 20.5" Large: torso lengths greater than 20"

Measure the length of your spine from C7 vertebra (the knobby bone at

the base of your neck) to level with your iliac crest (the top of your

hip bones).

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