Giving you enough room for that extra layer, while remaining lightweight and efficient, the Miko 20 keeps you moving smoothly down the trail with the dynamic BioSync suspension. Capable of fine tuning the fit and excelling in moisture management. FEATURES BioSync flexible hipbelt and shoulder harness that stretch and move with the natural motions of your body. Channeled foam backpanel featuring aerodynamic grooves to promote air movement and keep your back cooler. Perforated, padded shoulder harnesses with flexible edge construction for dynamic, breathable comfort. Large zippered hipbelt pockets large enough to carry your phone and trail essentials. Independent zippered pocket with SpeedClip hydration hanger, compatible with Gregory&';s Hydro Reservoirs (reservoir not included). Top quick access pocket for easy access to essentials Front durable stretch mesh stuff pocket. Dual side stretch mesh pockets and side compression to secure external gear. Trekking pole attachment with adjustable upper bungee loops and bottom reflective loop. Front reflective light attachment loop and top reflective gear loops. Custom ComfortGrip molded zipper pulls and molded webbing keepers for strap management. Available in Plus Size with extended length shoulder straps and hipbelts, plus additional fit revisions to accommodate larger body shapes. SPECS Item# 1452759968 Ideal Fit For Men Activity Day Hiking Suspension Technology BIOSYNC Compartment Access Panel Closure Type Zipper Number of External Pockets 5 Hydration Compatible Yes Hipbelt Included Yes Hipbelt Pockets Yes Trekking Pole Attachment Yes ONE SIZE Adjustable Torso Yes Fits Torso 15" - 21" / 38.1 - 53.3 cm Fits Hips / Waist 28" - 48" / 71.1 - 121.9 cm Weight 2 lbs / 907 g Volume 20 L / 1220 cu in. Max Carry Weight 20 lbs / 9.1 kg Packed Dimensions 20.25" x 11" x 7.7" / 51.4 x 28 x 19.6 cm MATERIALS External Material 100% Nylon Frame Materials n/a Pack Body 100D High Density 30% Recycled Nylon & 210D High Density 45% Recycled Nylon with PFC-Free DWR Pack Bottom 210D High Density 45% Recycled Nylon with PFC-Free DWR Lining 40% Post-consumer Recycled 135D Polyester with PFC-Free DWR Suspension Multi-Density LifeSpan EVA foam