Description A compact and lightweight frameless daypack ideal for day hikes, hydration, and commuting, the Outdoor Backpack 18L has all the comfort and versatility of our larger packs, but with a simplified design and aesthetic that feels at home on or off the trail. Designed to work seamlessly with Peak Design&';s wide array of Packing Tools*, which let you dial in your protection and organization for any gear-including your camera equipment.FitmentFits torso sizes from 17-20" (43-50cm)Fits waist sizes from 24-52" (61-132cm)External Dimensions47.6cm x 27.5cm x 15.5cm (18.74" x 10.83" x 6.10")Internal Dimensions47.1cm x 27.0cm x 15.0cm (18.54" x 10.63" x 5.91")Capacity18LPD Camera Cube CapacityFits 1x Smedium Camera Cube, with option to place X-Small Camera Cube above itCamera Cube above itNot compatible with Small, Medium, or Large sizesHydration/Laptop Carry1x internal hydtration sleevePass hydration hose through main rear zipinternal sleeve fits up to 13" MacBook ProWeight1kg (2.1 lbs) Materials & Sustainability Ultralight Terra Shell(TM) 210D ripstop exterior fabric is weatherproof, 100% recycled, and Bluesign approved Internal PU coating - exterior rated at 1500mm hydrostatic PFAS-free water-repellant treatment is a more eco-friendly option to standard DWR Super-durable #8 and #5 weatherproof UltraZips(TM) with abrasion-resistant UHMWPE thread All cording made from ultra high-strength UHMWPE for extended durablity Blended nylon and UHMWPE stretch mesh pockets Breathable nylon mesh harness and backpanel Bluesign certified nylon webbing Nylon Cord Hook(TM) and strap adjustment hardware High-strength custom aluminum hardware for harness and strap adjustment