The men&';s Tempo 6 H20 is our "coolest" pack yet. The insulated hydration compartment keeps water cold for up to four hours, and the 3D foam backpanel maximizes airflow against your back. An ideal pack for minimalist adventures or bike rides where you want just enough space for a layer. FEATURES Dual-layer 3D foam backpanel construction allows pack to fit snug to your back while still providing enough airflow to keep you cool and comfy Perforated, breathable shoulder harness with integrated magnetic sternum strap buckle to quickly detach and reattach the reservoir bite valve Includes 3D Hydro quick-drying, soft molded reservoir (2 Liter) with integrated drying hanger and spine molded handle for easy refills U-Zip access to dedicated insulated hydration reservoir pocket with revolutionary SpeedClip hydration hanger Insulated hydration compartment combines vapor-barrier liner with specialized insulation to keep water cold for up to four hours Front stretch-mesh pocket for additional on-the-go storage Removable hipbelt stabilizer strap for versatility of fit preference and activity Top quick-access zippered pocket with key clip Interior mesh stash pockets to keep trail essentials organized Custom ComfortGrip molded zipper pulls Front reflective light attachment loop and top reflective gear loops SPECS Item# 1433729807 Ideal Fit For Men Activity Day Hiking / Hydration / Mountain Biking Compartment Access Panel Closure Type Zipper Number of External Pockets 2 Hydration Compatible Yes Hipbelt Included Yes ONE SIZE Fits Torso 18" - 22" / 45.7 - 55.9 cm Fits Hips / Waist Up to 48" / Up to 121.9 cm Weight 1.34 lbs. / 608 kg Volume 6 L / 366 cu in. Max Carry Weight 15 lbs. / 6.8 kg Packed Dimensions 18.5" x 4" x 9" / 47 x 10 x 22.9 cm MATERIALS External Material 100% Nylon Pack Body 210D PU coated Nylon with PFC-Free DWR Pack Bottom 210D PU coated Nylon with PFC-Free DWR Lining 40% Post-consumer Recycled 135D Polyester with PFC-Free DWR Suspension Perforated Multi Density Foam & 3D Multi-Density Foam