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 = ""; } } }); Material: 100% ripstop nylon (100D face / 210D bottom), PU coating, DWR treatment Volume: 610 cu in Support/Suspension: foam back panel Shoulder Straps: Air Flow mesh Hydration Compatible: yes Description Product Description Trail runners and speed hikers know the important of going light, but too often comfort gets overlooked;--not with Patagonia's Fore Runner 10L Vest, which weighs just 11oz but is designed to avoid the rubber, bouncing, and jangling that'll drive you crazy on a 30 miler. The nylon ripstop fabric is coated with both polyurethane and a DWR coating, so it will repel water and not get heavier, and the foam back panel is made from comfortable and breathable mono mesh to help you stay cool. Of course, the point of the Fore Runner is to carry stuff, so it has a main top-loading compartment, stretch bottle pockets, and multiple stash pockets to hold energy gels, sunscreen, and other small but essential items. There's also a hydration reservoir for easy drinking, and the whole package is locked down with compression straps to prevent the bouncing that will make you go nuts on extra-long runs and fast hikes.