TECH-SPECS 1000D Cordura on base and harness 420D nylon rip-stop construction Reflective panels on harness Reflective print on rear Hypalon abrasion resistant reinforcement Superspace 5mm airspace fabric YKK water resistant zips 20-litres (1200cu in) capacity DIMENSIONS: 520(h) x 300(w) x 160(d) mm / 20.5(h) x 11.8(w) x 6.3(d) ins. VOLUME: 25-litres (1500cu in) capacity WEIGHT: 1400 Grams Optional Kriega Back Protector Insert MD 200-4932 (sold separately) Optional Kriega 3 Liter Hydrapak + Tube 200-4906 (sold separately)