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 = ""; } } }); AC2 (Advanced Composite Construction) suspension is ultra-light, supportive, and provides push through protection N400r-AC2 nylon 6 ripstop is super durable, lightweight and waterproof Reflective white interior makes it easier to see inside the pack 15 mm seam-taped N400r-AC2 construction is highly weatherproof Weatherproof RollTop extension collar adds additional carrying capacity Description Product Description FEATURES of the Arcteryx Alpha FL 30 Backpack Ultra light design and construction allow climbers full functionality Highly weather resistant AC2 (Advanced Composite Construction) fabric and sealed seams on the main compartment provide the ultimate protection from rain and snow Glove friendly main opening with a pull to open, pull to close drawcord system RollTop extension collar seals the pack for complete waterproof main compartment Small external WaterTight zippered pocket with key clip External bungee compression system can carry crampons, up to 4 ice tools or a bulky belay parka Shoulder strap and sternum strap have been revised for a better fit Top rope strap buckle is now anchored on the back panel for easier use