Features 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 4 integrated side lash points, now accommodating straps up to 22mm wide and 6 on the front for lashing extra gear to the pack's exterior such as sleeping pads or skis Description Product Description FEATURES of the Arcteryx Alpha FL 45 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 4 integrated side lash points, now accommodating straps up to 22mm wide and 6 on the front for lashing extra gear to the pack's exterior such as sleeping pads or skis 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