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Going on an expedition? The Arc'teryx Naos 85 Backpack is engineered for those monster loads that need to be stabilized with an oversized double-ring Load Transfer Disc™, six external compression straps, two-point side stabilizer, and a broad pivoting hipbelt with an extra set of side-mounted cinch straps. Part of Arcteryx's AC2 (Advanced Composite Construction™) Trekking Series, the Naos 85 is also designed in 420ACT fabric to make it weatherproof, highly durable, and fully seam-sealed for your long haul tendencies. Its' quick action airtight Roll Top™ closure keeps gear dry and protected, while WaterTight™ external zippers seal things up from the elements. Integrated with a Monoframe™ backpanel an Arc'teryx adjustable GridLock™ shoulder strap suspension system easily fine-tunes on the go for an optimal fit and ultra comfort. Its' anatomical shape is enhanced with thermoformed shoulder straps and hipbelt to maximize big load comfort. Details such as a removable top lid, Kangaroo pocket, fully accessible side zip, laminated map pocket, and hydration bladder sleeve with HydroPort™ help to minimizing the suffer-fest into base camp. With the Arc'teryx Naos 85 Backpack you can go big so that you don't have to go home before it's time.

When you need massive load support with plenty of performance features, nothing gets you there better than Gregory's Professional Series packs. The Denali Pro 105 Backpacking Backpack is the flagship of the line--one of the best packs that Gregory has to offer. As an experienced backpacker or an accomplished mountaineer, you're already aware that the longer you're out in the field wearing your pack, the more you rely on adjustable features to customize and adjust the load on your shoulders and back. The Denali Pro offers more adjustment options than other packs with similar carrying capacities. Easy-access stabilizer straps around your shoulders, hips and sternum allow you to fine tune your suspension. The Adjust-A-Cant™ waistbelt provides three different cant settings. The Flo-Form® II shoulder harness is contoured and sculpted to wrap comfortably over your shoulders and around your chest. The Auto-Cant™ Shoulder Harness System adjusts automatically for optimum fit and comfort. The Flo-Form® II Waistbelt features sculpted tri-density foam padding that hugs your hips without pinching or binding. The reinforced FOAM-X Flex frame sheet with cutouts provides flexible support and helps protect your back from the strains commonly associated with a week or more on the trail. The Flo-Form® II back panel offers cushioned comfort in the form of a special thermoformed foam with a cushioned insert and molded air channels. An occipital cutout provides extra head clearance and a load transfer belt stiffener provides maximum load transfer to your hips. The large stretch mesh side pockets are generous enough to hold additional water or fuel bottles and they feature a pass-through ski slot for enhanced portage capacity. Whip off the top pocket and you can convert it into a fanny pack with a built-in 2-inch wide web belt--an ideal necessity for scouting out the lay of the land ahead. The Denali Pro 105 also features a sleeping bag stash--unzip the large hoop door for immediate access. The Shelter-Rite® reinforced bottom is completely waterproof and virtually tear proof, so you don't have to worry about soaking or losing your contents inside the pack. If you want the best in large expedition packs, the expedition Gregory pack is certainly ready to go the distance.

Voted Most Waterproof- Backpacker Magazine's Gear of the Year Awards 2009The ultimate in crossover versatility, the Arcteryx Arrakis 65 Backpack delivers year-round water resistant performance, built with 420ACT seam sealed construction and a unique RollTop closure system that allows for compression of the pack for a smaller load and 10 expandable liters of space when longer trips call for additional gear.Built with a MonoFrame backpanel support system and a pivoting load transfer disc, the Arrakis enables you to carry a heavy load in comfort whether you are on a backcountry ski trip, multi-day backpacking excursion or a climbing expedition. A customizable Arcteryx Lash Ladder system accommodates ropes, camping gear, skis, or snowboard, and an external probe pocket allows for easy access to safety equipment in case of an emergency.With pack access points including a full-length side zipper and large kangaroo pocket, you can locate your jacket when you break for lunch and keep your necessities handy without tearing open your whole pack.

Because you love to ski, climb, trek, and travel, you need a pack that can perform during a multi-day backcountry ski trip or hauling climbing gear on an extended expedition. The weather resistant Arteryx Arrakis 50 Backpack is a multi-sport pack that delivers brilliant year-round performance with a unique RollTop Closure system, adapting easily to size of the load, compressing for lighter over-night trips, but offering an addition 10 liters of carrying capacity when fully extended . Built with a MonoFrame backpanel support system and a pivoting load transfer disc, the Arrakis enables you to carry a heavy load in comfort while an Arcteryx Lash Ladder system accommodates ropes, camping gear, skis, or snowboard. The laminated external probe/tool pocket allows for easy access to safety equipment in case of an emergency, and with pack access points including a full-length side zipper and large kangaroo pocket, you can locate your jacket when you break for lunch and keep your necessities handy without tearing open your entire pack.

Designed in ultra lightweight silicone coated Mini Ripstop™ nylon, the new Arc'teryx Men's Altra 75 Backpack is dialed for those trekking or multi-day enthusiasts who are passionate about weight-saving. During a traverse of Backbone Ridge or a light and fast Na Pali Coast out and back, this lightweight pack combines a AC2 (Advanced Composite Construction) technology with GridLock™ suspension that features anatomically shaped shoulder straps, a modular sternum strap, breathable shoulder straps and hipbelt, adjustable shoulder straps, and a thermoformed triple-density hipbelt for the ultimate in gear carrying. Four compression straps stabilize the load, while stretch-mesh stash pockets on the hipbelt, a map pocket, kangaroo pocket with top compression strap, and two stretch-mesh pockets stow easy to reach essentials. Delivering maximum load control and warm weather comfort, the Arc'teryx Altra 75 Backpack for men also includes a full length inverted U-zipper for quick panel-loading access.

Continuing the Osprey legacy of deluxe custom fitting packs, the Osprey Xenon 85 Backpack for Women offers women's specific fit and comfort designed for carrying a heavy load. The Xenon 85 has a custom moldable hipbelt for a personalized fit and a dual density foam harness with softer cutouts in the neck and armpit regions for all day backpacking comfort. When you finally arrive at basecamp and venture out on a day hike, take along the convertible top pocket/lumbar pack and the Ultralight AquaSource ReCurve hydration system so you can stay fueled and hydrated while carrying a light load.

Voted Expedition Master- Backpacker Magazine's Gear of the Year Awards 2009Continuing the deluxe custom fit legacy with Recurve suspension and BioForm A/X components, the Osprey Argon for men is the most customizable and comfort oriented packs. Features include a 40d Sil Nylon AquaSource that converts to a hydration pack with padstraps, vertical zip access into main body, wide mouth sleeping bag compartment, top lid that converts to a lumbar pack with AirScape lumbar, and zippered easy access side pocket.

Designed specifically for women in ultra lightweight silicone coated Mini Ripstop™ nylon, the Arc'teryx new Arc'teryx Altra 62 Backpack - Women's is dialed for those trekking or multi-day enthusiasts who are passionate about weight-saving. During a traverse of Backbone Ridge or a light and fast Na Pali Coast Kalalau Trail out and back, this lightweight pack combines a AC2 (Advanced Composite Construction) technology with GridLock™ suspension that features anatomically shaped shoulder straps, a modular sternum strap, breathable shoulder straps and hipbelt, adjustable shoulder straps, and a thermoformed triple-density hipbelt for the ultimate in gear carrying. Four compression straps stabilize the load, while stretch-mesh stash pockets on the hipbelt, a map pocket, kangaroo pocket with top compression strap, and two stretch-mesh pockets stow easy to reach essentials. Delivering maximum load control and warm weather comfort, the Altra 62 pack also includes a full length inverted U-zipper for quick panel-loading access.

Designed in ultra lightweight silicone coated Mini Ripstop™ nylon, the new Arc'teryx Altra 65 Backpack - Men's is dialed for those trekking or multi-day enthusiasts who are passionate about weight-saving. During a traverse of Backbone Ridge or a light and fast Na Pali Coast out and back, this lightweight pack combines a AC2 (Advanced Composite Construction) technology with GridLock™ suspension that features anatomically shaped shoulder straps, a modular sternum strap, breathable shoulder straps and hipbelt, adjustable shoulder straps, and a thermoformed triple-density hipbelt for the ultimate in gear carrying. Four compression straps stabilize the load, while stretch-mesh stash pockets on the hipbelt, a map pocket, kangaroo pocket with top compression strap, and two stretch-mesh pockets stow easy to reach essentials. Delivering maximum load control and warm weather comfort, the Altra 65 pack also includes a full length inverted U-zipper for quick panel-loading access.

Fully featured and capable of carrying big loads with exceptional comfort, the updated Gregory Whitney 95 Backpack offers endless options for organizing and accessing your backpacking gear. Its Response CFS (Custom Fit Suspension) features an independent camming waistbelt that automatically adjusts to your hip angle, while a customizable pivot mirrors your body's movements, evenly distributes weight, and increases both load support and comfort. Gaining pack access through the top, front, side, or bottom, dual hydration ports and sleeve lets you get your water when ever you need it. Highly adjustable and easy to load, this comfortable workhorse sports a convenient front pocket and twin side pockets with stash pouch, top pocket that converts to a fanny pack, hideaway water bottle holder and stash pocket, and dual waistbelt pockets. For a weekend or a month the Whitney 95 does it all.

Approaching the Cirque of the Unclimables, the Mammut Heron Pro 85 Backpack is super-rigged for your heavy base camp weight with a pivoting belt that optimizes balance with a minimum of effort even when traversing exposed terrain. After customizing the fit with is changeable Butterfly™ aluminum 8 mm frame, 4-level back system, and angle adjustment of the hip belt, your big load doesn't seem so unreasonable. Topped to the gills you've extended the adjustable and removable lid, used the removable bottom compartment, and slung a layering top and essentials off the daisy chain gear carrier. Tensioning the compression straps at the side front, gear stays put as you dig into the large front pocket, 2 stretch side pockets, stowable bottle holder, and pocket on the hip belt for a sundry of essentials during a lunch break. Securing the 2 ice tool attachments, you grab your trekking poles off their attachment, pull the pocketed round-shaped lid and convert is to a lumbar for a ridgeline reconnaissance. Thankfully it's not too much farther, and everything will jettison out of the Heron Pro 85's large front-access main compartment for your extended base camp.

A clean and simple lightweight SilSeal Ripstop Cordura® Nylon design, the Women's specific Tadita 50 Backpack from Mountain Hardwear modifies its alpine suspension to maximize ventilation, while maintaining excellent support and load transfer. Fully featured, this pack uses a glove-friendly Compression Strap System to effectively shrink to minimal volume, which tucks away inside front pocket when not needed. Its top skirt extends to add 250 cu. in. / 4L of carrying capacity on demand, while the Tadita 50's Floating top lid with bungee web is removable to reduce weight. A roomy front pocket provides convenient storage for frequently-used items, ice axe and ski pole attachment straps and convenience, and stretch woven side pockets offer quick storage/access for water bottles, hat/gloves, etc.