Zpacks Arc Haul Ultra 50L Backpack

🇺🇸 About Zpacks ── Premium Ultralight Backpacking Gear 🇺🇸 Founded in Florida, USA in 2005, Zpacks is a world leader in thru-hiking and ultralight (UL) outdoor equipment. Handcrafted in the USA, Zpacks gear is renowned for ultra-lightweight designs, unmatched durability, and practical functionality. The Zpacks Arc Haul Ultra 50L Backpack combines a patented ventilated carbon fiber frame with state-of-the-art Ultra fabric, serving as the ultimate choice for multi-day hikes requiring high comfort and carrying capability.

🏷️ Product Features

• Patented Arc Frame Ventilation: Features an adjustable curved carbon fiber frame that holds the pack off your back, allowing optimal airflow to prevent heat buildup and sweat during strenuous long-distance hikes.
• Superior Load Transfer: The rigid carbon frame transfers load weight directly onto your hips, providing comfortably supported carrying capacity of 30-35 lbs (14-16 kg) with a 40 lbs (18 kg) max load.
• Revolutionary Ultra Fabric: Constructed from ultra-high-molecular-weight polyethylene (UHMWPE) laminate, providing extraordinary tear strength, durability, and waterproof protection at a fraction of the weight.
• Micro-Adjustable Torso & Interchangeable Belt System: Available in Short, Medium, and Tall torso lengths paired with Small, Medium, or Large belt sizes for a precise custom fit.
• Large 8L 3D Mesh Front Pocket: Roomy elastic front pocket provides convenient, quick-access storage for rain gear, wet flysheets, or water filters.
• Roll-Top Compression Closure: Features a secure roll-top closure with top strap, enabling easy pack volume adjustment as food and supplies decrease.
• Forward-Angled Water Bottle Pockets: Slanted side pockets allow easy one-handed grabbing and stowing of water bottles while walking.
• Fully Factory-Taped Seams: All major internal seams are factory-taped for dependable weather resistance during rainstorms.

📋 Technical Specifications

📐 Torso Sizes, Belt Options & Weight Specs (Gray / Black)

💡 Arc Flex Patented Airflow Frame System

• Adjustable Arc Curvature: Tension cords on either side of the pack allow you to flex the carbon fiber stays to adjust ventilation gap distance according to personal preference.
• Continuous Air Flow: The air gap keeps your back cool and dry by preventing sweat accumulation, significantly improving all-day hiking comfort.
• Balanced Load Support: Despite its lightweight build, the rigid carbon frame distributes pack weight smoothly into the padded belt, taking stress off your shoulders.

💡 Care & Maintenance

• Fit & Packing: Pack gear firmly inside, then tighten the Arc frame tension cords to adjust ventilation gap before putting the pack on and adjusting hip belt straps.
• Cleaning: Wipe dirt off with warm water, a soft cloth, and mild soap. Air dry in a shaded area. Do not machine wash, tumble dry, or use bleach.
• Storage: Release tension on the Arc frame tension cords before long-term storage, keeping the pack in a cool, dry place away from direct sunlight.

* The Zpacks Arc Haul Ultra 50L combines extreme light weight, patented ventilation, and high load capacity to set the standard for multi-day ultralight backpacking. *