UltrAspire Hydration Pack - Purist
Overview
The Purist is engineered for multisport athletes who demand maximum versatility and reliability from their gear. With a 22-liter 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 ensure 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.
Constructed 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.
Recommended Use:
The 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.
Weight: 1 lb 5 oz (595g) Features Key Features
- 22-litre roll-top design built for multisport and endurance athletes
- Durable construction with premium materials for rugged, all-condition use
- Massive side pockets fit all UltrAspire hydration options and allow fast gear access
- Accessible, insulated reservoir sleeve for efficient mid-effort refills
- Large quick-stash outer pocket with compression for secure load management
- Anodized aluminum buckles provide reliable attachment for poles, ice axes, or hose management
- MaxO2 sternum system with adjustable toggle buckle for custom fit and breathability
- Front harness includes a zippered bottle pocket with weather protection
- Layered zippered pocket at the fingertips for quick-access items
- Sweat-proof lined phone pocket keeps electronics protected
- Dual zippered top shoulder pockets for additional organization Technical Specs
- Fit: Universal
- Sizes: 26″–45″
- Color: Black
- Hydration Included: Not Included
- Bottle Compatible: UltraFlask 550 Hybrid Bottle, Softflask 300/500/800, Human 20
- Bottle, Reservoir
- Capacity: 1343 cu in (22L)
- Weight: 1 lb 5 oz (595g)
- Main Compartment Capacity: Approx. 18L
- Total Pack Capacity: 22L
Main Compartment Dimensions (fully loaded):
- 50 cm tall
- 20 cm wide
- 17 cm deep
Exterior Storage:
- Front side pockets: Approx. 1L each
- Rear bottle pockets: Approx. 1L each
- Rear stow pocket: Approx. 1L depending on main compartment load