{"product_id":"ultraspire-hydration-pack-purist-black-one-size","title":"UltrAspire Hydration Pack - Purist, White\/Black, One Size","description":"\u003cp\u003e\u003cstrong\u003eThe Purist is engineered for multisport athletes who demand maximum versatility and reliability from their gear. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith a 22-litre capacity and a roll-top design, this pack carries everything you need for endurance adventures across any terrain. Massive side pockets offer fast access to essentials and can carry any UltrAspire hydration components. A quick-stash outer pocket with load compression keeps gear secure and manageable. The Purist is also reservoir-compatible for seamless hydration on the move. Equipped with removable anodized aluminum buckles, it provides durable attachment points for trekking poles, ice axes, or hose management. The harness system webbing and a sliding toggle ensures a secure, adjustable fit. The front harness features large zippered bottle pockets for weather protection, layered zippered pockets available at your fingertips, sweat-proof phone storage, and dual zippered top shoulder pockets for added organization and access. The MaxO2 Waist feature allows for a completely customizable fit on this pack whether empty or fully loaded. One size fits most. \u003c\/p\u003e\n\u003cp\u003eConstructed with our EnduraMesh XT and Challenge Cloth, the Purist features a true 4-way stretch mesh that moves naturally with the body while maintaining structural integrity under load. Unlike conventional stretch materials that fatigue and lose shape over time, EnduraMesh XT blends high-strength Nylon 66 with 30% UHMWPE fibers,  a material rated up to 15 times stronger than steel by weight. This advanced composition delivers adaptive storage that expands when needed, secures gear without sagging, and withstands abrasion from repeated use in harsh environments, preserving both durability and a streamlined fit.\u003c\/p\u003e\n\u003cp\u003eThe Purist is part of our Pure Mountain Running line, created for athletes who move through environments where gear is continuously tested by terrain. The primary body of the pack is constructed using challenge cloth, a three-layer composite that pairs high-density polyester with a UHMWPE fiber reinforcement layer and a polyurethane film. This creates a fabric that is significantly more abrasion resistant than even military spec fabrics, while remaining exceptionally lightweight and ready to handle sharp rock, brush, and the constant friction of long days in the mountains.\u003c\/p\u003e\n\u003cp data-start=\"656\" data-end=\"1094\"\u003eComplementing this is our EnduraMesh XT, a true 4-way stretch mesh that flexes naturally with the body. Unlike typical stretch meshes that degrade under stress, EnduraMesh XT blends Nylon 66 for strength with 30% UHMWPE fibers that are rated up to 15 times stronger than steel. The result is a pack that delivers both adaptability and long-term durability, built to move with you while standing up to whatever the mountain throws your way.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eRecommended Use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Purist is designed for multisport athletes and endurance adventurers who need a versatile, high-capacity pack built to handle everything. Ideal for ultrarunning, adventure racing, mountaineering, and long backcountry adventures where carrying a variety of gear is essential. Perfect for athletes who demand fast access, durable construction, and all-day comfort across unpredictable terrain and changing conditions.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDetails:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e• 22-litre roll-top design built for multisport and endurance athletes\u003cbr data-start=\"182\" data-end=\"185\"\u003e• Durable construction with premium materials for rugged, all-condition use\u003cbr data-start=\"260\" data-end=\"263\"\u003e• Massive side pockets fit all UltrAspire hydration options and allow fast gear access\u003cbr data-start=\"349\" data-end=\"352\"\u003e• Accessible, insulated reservoir sleeve for efficient mid-effort refills\u003cbr data-start=\"436\" data-end=\"439\"\u003e• Large quick-stash outer pocket with compression for secure load management\u003cbr data-start=\"515\" data-end=\"518\"\u003e• Anodized aluminum buckles provide reliable attachment for poles, ice axe, or hose management\u003cbr data-start=\"612\" data-end=\"615\"\u003e• MaxO2 sternum system with adjustable toggle buckle for custom fit and breathability\u003cbr data-start=\"700\" data-end=\"703\"\u003e• Front harness includes a zippered bottle pocket with weather protection\u003cbr data-start=\"776\" data-end=\"779\"\u003e• Layered zippered pocket at the fingertips for quick-access items\u003cbr data-start=\"845\" data-end=\"848\"\u003e• Sweat-proof lined phone pocket keeps electronics protected\u003cbr data-start=\"908\" data-end=\"911\"\u003e• Dual zippered top shoulder pockets for additional organization\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFit:\u003c\/strong\u003e Universal\u003cbr\u003e\u003cstrong\u003eSizes:\u003c\/strong\u003e 26″–45″\u003cbr\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003cbr\u003e\u003cstrong\u003eHydration Included:\u003c\/strong\u003e Not Included\u003cbr\u003e\u003cstrong\u003eBottle Compatible:\u003c\/strong\u003e UltraFlask 550 Hybrid Bottle, Softflask 300\/500\/800, Human 20 Bottle, Reservoir\u003cbr\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 1343 cu in (22L)\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 lb 5 oz (595g)\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"28\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"28\"\u003e\u003cstrong\u003ePURIST CAPACITY \u0026amp; DIMENSIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"30\" data-end=\"97\"\u003e\u003cstrong\u003eMain Compartment Capacity:\u003c\/strong\u003e Approx. 18L\u003cbr data-start=\"68\" data-end=\"71\"\u003e\u003cstrong\u003eTotal Pack Capacity:\u003c\/strong\u003e 22L\u003c\/p\u003e\n\u003cp data-start=\"99\" data-end=\"144\"\u003e\u003cstrong\u003e\u003cbr\u003eMain Compartment Dimensions (fully loaded):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"145\" data-end=\"189\"\u003e\n\u003cli data-section-id=\"19qew6u\" data-start=\"145\" data-end=\"159\"\u003e50 cm tall\u003c\/li\u003e\n\u003cli data-section-id=\"18r2khn\" data-start=\"160\" data-end=\"174\"\u003e20 cm wide\u003c\/li\u003e\n\u003cli data-section-id=\"1v7sq1g\" data-start=\"175\" data-end=\"189\"\u003e17 cm deep\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"191\" data-end=\"210\"\u003e\u003cstrong\u003e\u003cbr\u003eExterior Storage:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"211\" data-end=\"357\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1gzsslh\" data-start=\"211\" data-end=\"250\"\u003e\n\u003cstrong\u003eFront side pockets:\u003c\/strong\u003e Approx. 1L each\u003c\/li\u003e\n\u003cli data-section-id=\"1kn7cbj\" data-start=\"251\" data-end=\"291\"\u003e\n\u003cstrong\u003eRear bottle pockets:\u003c\/strong\u003e Approx. 1L each\u003c\/li\u003e\n\u003cli data-section-id=\"agw8j2\" data-start=\"292\" data-end=\"357\" data-is-last-node=\"\"\u003e\n\u003cstrong\u003eRear stow pocket:\u003c\/strong\u003e Approx. 1L depending on main compartment load\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"UltrAspire","offers":[{"title":"Default Title","offer_id":51271506362535,"sku":"UA148WH","price":599.95,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/1422\/5063\/files\/7f43d7be-53a5-43b5-b6a7-55bfe7cf7c78.jpg?v=1787885964","url":"https:\/\/mountainadventure.co.nz\/products\/ultraspire-hydration-pack-purist-black-one-size","provider":"Mountain Adventure","version":"1.0","type":"link"}