Top loader with built in Hydration sleeve and front pocket. Front pocket will fit most spotting scopes with room and has separate compression straps. There is a quick stash pocket behind front pocket that can fit an extra layer / puffy jacket. The Kutthroat has built in stay guides sized to hold 26” composite stays, combined with adjustable load lifter tracks, transfer the weight to your hips using our proven Duplex shoulder straps and waistbelt. (included). Expand capacity by adding any of our top lids. – Main compartment: 3175 ci / 52 L – Main compartment dimensions: 12? / 30.5cm wide x 7? / 17.8cm depth x 34? / 86cm height – Opening circumference: 38? / 96.5cm – Front pocket: 875 ci / 14.3 L – Front pocket dimensions: 11? / 28cm wide x 4? / 10cm depth x 24? / 61cm height (waterproof zipper) Kutthroat Only : 4280ci Kutthroat + Medium Belt Pouch : 4495ci Kutthroat + Guide Lid : 5480ci Kutthroat + Organizer Guide Lid : 5080ci