Mountain Hardwear UL 20 Backpack Ain't No Mountain High Enough At just 10. 7 ounces, the UL 20 redefines what's possible in a durable daypack, made for alpinists, fastpackers, and adventurers who refuse to choose between carrying capacity and ultralight efficiency. Built from recycled ripstop nylon, it's strong enough to survive granite peaks and technical terrain, yet so light it barely registers in your pack. It also compresses and folds into its own front stash pocket-perfect for travel, basecamp operations, or carrying as a backup pack when you're already committed to a larger load. The quickdraw drawstring main compartment opens fast and closes securely, while the versatile center strap covers the drawstring for weather resistance and acts as a load compressor or rope carrier for climbing overloads. Adjustable side bottle pockets swap out flimsy mesh for durable recycled ripstop and breathable air mesh shoulder straps keep you comfortable even on steep ascents. An ice axe loop and tool attachment points transform this day pack into genuine alpine gear. The sternum strap with integrated safety whistle adds another layer of preparedness, and reflective accents keep you visible on unexpected descents. Everything about this pack prioritizes performance: frameless design for flexibility in tight spaces, undyed materials that weigh nothing, and geometry tuned for climbing rather than hiking trails. The 20-liter capacity handles a full day's worth of climbing or skiing gear, emergency layers, and food for high-altitude adventures. Features20-liter capacity handles full alpine climbing or ski mountaineering day loads Ultralight at 10. 7 ounces, engineered for fast and light alpinism Packs into its own front pocket for ultracompact travel, basecamp efficiency, or as a supplement pack100% recycled 200D ripstop nylon is durable enough for technical terrain while remaining featherweight Quickdraw drawstring main compartment opens fast and closes secure for rapid transitions Versatile center strap covers drawstring for weather resistance, compresses load, and secures climbing rope or overloads Adjustable side bottle pockets in 200D ripstop for durability superior to mesh alternatives Breathable air mesh shoulder straps provide comfort and ventilation on technical ascents Front and rear grab handles add stability, security, and rescue capability Ice axe loop and tool attachment points prepare the pack for alpine climbing and scrambling Sternum strap with integrated safety whistle adds preparedness and security Reflective accents on shoulder straps and front panel enhance visibility SPECIFICATIONSInteded Use Hiking, Climbing Capacity20 LWeight10. 7 oz / 303 g Primary Material200D Recycled Ripstop Nylon (100% recycled)Bottle Pocket Material200D Recycled Ripstop Nylon Frame Type Frameless Packed Size Compresses into front stash pocket - approximately 7"H x 6. 5"W x 2"DTorso Fit16-22 inches / 41-56 cm Attachment Points Ice axe loop, tool loops, grab handles (front and rear) | Mountain Hardwear | Ul 20 Backpack | Nylon