Features Enter your model number above to make sure this fits. P.when("RPPStripeRendered").execute(function(stripeData){ if(stripeData && stripeData.state){ switch(stripeData.state){ case "result-found": document.getElementById("replacementPartsFitmentBulletInner").innerHTML = "This fits your "+stripeData.item+"."; document.getElementById("replacementPartsFitmentBullet").className = ""; break; case "no-result": if(stripeData.showBullet && stripeData.showBullet !== "0"){ document.getElementById("replacementPartsFitmentBulletInner").innerHTML = "No information found for this part for "+stripeData.item+"."; document.getElementById("replacementPartsFitmentBullet").className = ""; } break; default: document.getElementById("replacementPartsFitmentBullet").className = ""; } } }); Arched back system for a comfortable fit in the riding position Extra wide fins on waist belt provide a snug fit and a carry system with ventilation channels and shock absorbtion functionality Hydration system compatible with tube channels on both sholder straps Removable PSA back system features visco-elastic SC1 foam Rugged Hypalon external compression straps can carry extra gear Description Product Description DECENT FEATURES of the Deuter Attack 20 Multi-Layer Construction: Delivers excellent shock absorption and provides the basis for the protective function Extra Wide, Anatomic Cut Waist Fins: Are designed to cover no more than 5-10% of the wearer's back, resulting in increased ventilation Extra Protection For The Tailbone Ventilation Channels: Allow for comfortable air circulation and less perspiration Removable Shield Back System-TUV Inspected and CE Certified PSA-Back Protector Front Pocket Organization Hydration Compatible Helmet Holder 3 Internal Valuables Zip Pockets 3M Reflector Loop The SPECS of the Deuter Attack 20 Carry Capacity: 10 lbs / 4.5 kg Volume: 1220 cubic inches / 20 liter Weight: 3 lbs 13 oz / 1720 g Dimension: (H x W x D): 22 x 11 x 9" / 56 x 28 x 22 cm Material: Super Polytex / HexLite 210