From the manufacturer

Features

• Bounce-free movement thanks to the close-fitting vest-style harness.
• Elasticated double chest strap provides security at high pace, while stretching when you’re breathing hard.
• Tough 100D ROBIC® nylon ripstop fabric is strong, lightweight, and withstands being hauled over rough ground.
• Grab kit quick with the zipped entry, handy top pocket, and large front stash.
• Versatile pole storage, using either the classic attachment points or the side stash pockets which can accommodate z-poles.
• Keep moving with on-the-go access to essentials in harness pockets.
• Stay hydrated with space for a 3L water bladder and soft flask harness pocket (soft flask not included).

Specifications

• Weight: 56g (M-L)
• Volume: 18L / 1100 cu. in.
• Dimensions: S: 44 x 25 x 20cm. M: 47 x 25 x 20cm
• Back System: Air Contour™
• Back Length: S: 18" , M: 19"