The Altra 85 has been discontinued. It was replaced by the Arc'teryx Bora AR 63.
Mountains Plus says:
Five-plus day, 85 litre volume expedition back pack that carries heavy loads comfortably for long periods over rough terrain when trekking and backpacking, constructed with the new C^2 Composite Construction system.DESCRIPTIONThe larger volume Altra packs (Altra 62 through 85) have a Load Transfer Disc(TM) that pivots to increase agility and stability on rough terrain and combine the C2 (Composite Construction) suspension with Gridlock(TM) shoulder straps that adjust for custom fit. The smaller volume Altra packs, (Altra 33 through 50) keep weight to a minimum by using the efficient C2 (Composite Construction) system. Trekking Near or Far Composite Construction (C2) eliminates back panel layers to reduce weight without compromising on structure or comfort. The pear-shaped Altra design holds the pack close to the body, minimizing load movement and backward pull for extended comfort and energy efficient movement under weight. Thick Skin All Arc'teryx packs use premium fabrics. The textiles used in the Altra series are chosen for durability. 210D nylon 6,6 ripstop fabric is tear-resistant and long lasting; heavier weight 500D aty nylon 6,6 protects high wear areas and resists contamination from dirt, snow and water pick-up. Suspension Details In larger volumes, 62-65L, 72-75L and 85L Altra packs offer full adjustment of the shoulder straps with GridLockTM, a unique system that adjusts straps for both width and height. In larger volumes, 62-65L, 72-75L and 85L Altra packs offer the rotating Load Transfer Disc(TM) that distributes weight to the hips on uneven terrain. Efficiency Space efficient compartments, one-handed timesaving closures and pocket configurations make Altras the lightest weight, fully featured bags in their class. Wingman(TM) side pockets wrap over the hip and are accessible without taking off the pack.PACK MATERIALS Pack Body: 210D nylon 6,6 ripstop is a high density single ripstop fabric coated with silicone to shed moisture and increase waterproofness. Used in the body for its light weight, the textile's construction is a balanced weave that is durable and tear-resistant. Reinforced in the high wear areas with extremely durable 500D ATY nylon 6,6 silicone treated PU fabric that resists dirt, snow and water pick-up. Collar: 100D nylon 6,6 mini ripstop has a high thread count in a mini ripstop weave that has incredible tear resistance. Coated with silicone to shed moisture and for waterproofness. Stays: 6005-T6 extruded aluminum M-bar stays are rigid and lightweight to provide structural support. Back Panel: HD 80 foam is high density polyethylene foam that provides support and structure to the bag, plus comfort against the back. Shoulder Straps: 500D ATY nylon 6,6 silicone treated PU is an air textured yarn used in shoulder straps for its durability and aesthetic properties. Silicone treatment helps prevent dirt, snow and water pick-up. Hypercell foam has the benefit of being open cell polyurethane foam that provides stability and comfort. Spacermesh(TM) lining provides airflow. Polyester yarn is hydrophobic by nature, to repel water. Technical FeaturesLightweight DurableConstructionTop grab handle Twin aluminum stays for durable supportZippers & Fly ConfigurationSide zipper access Webbing zipper pullsPack Pocket ConfigurationKangaroo pocket with top compression strap and snap closure Stretch-mesh stash pockets on hipbelt Two Wingman(TM) one-handed easy access pocketsPack HydrationHose clip Designed to fit up to 2L bladder Internal hydration pocket with zipPack Suspension ConfigurationGridLock(TM) shoulder strap adjustment system Anatomically shaped shoulder straps Adjustable, removable sternum strap Thermoformed hipbelt Breathable backpanel Padded, contoured shoulder straps Arc'teryx C^2 (Composite Construction) suspension system Load level adjusters Rotating Load Transfer Disc(TM) distributes loads to hipsPack Loading & Closure ConfigurationExtendable collar with drawcord for additional capacity Large, webbing pull-tabs for quick and easy, glove-friendly access Top loading lid closure with two buckles to secure pack contents U-Shape zipper for easy accessPack Lid ConfigurationRemovable/ extendable top lid with two zippered compartments Key clip in lid pocketPack Compression Strap ConfigurationFour compression straps - two on each sidePack Attachment ConfigurationP'ax one-hand axe attachment system-allows for one-handed access to tools Micro daisy chainsMATERIALS210D nylon 6,6 Ripstop 500D ATY nylon 6,6 silicone treated with PU 100D nylon 6,6 mini Ripstop with silicon and PU coatings 6005-T6 aluminum M-bar stays HD 80 foam back panel 500D ATY nylon 6,6 silicone treated with PU Hypercel FoamCARESurface clean only.
Historic Range: $348.93-$499.00