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Light, durable 35L pack with a customizable fit for day hikes and overnights. Customize how your hike feels with the Aerios 35 Backpack. Its patent-pending interchangeable harness system — with three sizes of hipbelts and shoulder strap options — allows you to personalize your fit, so weight is evenly distributed through your hips and shoulders. Plus, the lightweight, durable grid pack fabric sheds light rain and stands up to all the drops, drags, and snags a pack encounters on the trail. Need a different size? Try the smaller Aerios 18 Backpack. Full Product Features Technical features - Lightweight - Durable - Water repellent Construction - Proprietary Hadron® LCP (Liquid Crystal Polymer) grid face fabric is incredibly light and exceptionally durable with abrasion resistance rivalling fabrics twice its weight Fabric treatment - FC0 DWR (Durable Water Repellent) finish repels moisture and is free from intentionally added PFAS Logos & Label configuration - Arc'teryx word logo - Arc'teryx Bird logo Pack attachment configuration - Two trekking pole attachment points Pack compression strap configuration - Front bungee compression system and webbing daisy chain provide external carry options Pack dimensions - Length: 54cm, Width: 28.5cm, Depth: 24cm, Volume: 36L Pack hydration - Reservoir bladder compatible inside of main compartment - Hydration reservoir sold separately Pack loading & Closure configuration - Accessible, easy-to-use roll-top design adds up to 10L additional capacity Pack pocket configuration - Internal security pocket with key clip - Top pocket - Two side pockets - Highly breathable shoulder harness with two zippered pockets that accommodate 500mL soft flasks or devices Pack suspension configuration - Adjustable sternum strap - Interchangeable harness system available in two sizes for a precise fit across a wide range of body types - Patent-pending two-point harness adjustment system works at top and bottom for optimal pocket positioning and fit - Supportive, highly breathable monofilament mesh hipbelt has adjustments front and back to fine-tune the fit - SRT size: Shipped with small hipbelts and shoulder straps - REG/TALL sizes: Shipped with large hipbelts and shoulder straps - Highly breathable AeroForm back panel and anti-barreling frame sheet enhance carrying comfort - Removable 7000 series aluminum stay helps support the pack for comfort and balance Sustainability - Contains materials produced through processes that meet bluesign® criteria - Primary fabric - bluepass Material - Secondary fabric - bluepass Material - Lining - bluepass Material - PFAS (Per- and polyfluoroalkyl substances) Compliant - Lining - bluepass Material, FC0 DWR, recycled content - Primary Fabric - bluepass Material, FC0 DWR - Secondary Fabric - bluepass Material, FC0 DWR Materials - Contrast: Powernet 240g, 200gsm - 72% Nylon, 28% Elastane - Contrast: 100D SD Cordura nylon 6,6 Dobby face, FC0 DWR, 131gsm - 100% Nylon - Lining: 210D Recycled Polyester, FC0 DWR, 110gsm - 100% Polyester - Body: 210d Cordura nylon 6,6 + 6.5mm 200d twisted Vectran full grid, FC0 DWR, 161 gsm - 93.6% Nylon, 6.4% Polyacrylate - Origin of fabric: KOREA - Origin of dyeing: KOREA - Origin of Manufacture: VIETNAM - May release plastic microfibres into the environment when washing