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New!  UltrAspire TRAVERSE HYDRATION PACK

UltrAspire TRAVERSE HYDRATION PACK Running Pack
TRAVERSE HYDRATION PACK
 
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UltrAspire pack: Traverse Hydration Pack
Our Price: £160.00
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MORE COMING IN MAY 2026  
Description
 
UltrAspire Pack: TRAVERSE HYDRATION PACK

Built for those running extra long 200 mile+ distances the UltrAspire Traverse offers a high-performance 20 litre capacity in a low-profile, lightweight race design that prioritises storage at your finger tips whilst on the move as well as uber durable and water-resistant fabric. Wrapping comfortably around the body for a secure, bounce-free fit this pack features UltrAspire's updated MaxO2 adjustable sternum system with dual vertical adjustment for dialed-in comfort and zero slippage.

A large rear quick stash compression pocket gives you fast access to gear, while an externally accessible, insulated reservoir sleeve up to 2 litre reservoir) makes quick refills at aid stations easier than ever. The main compartment offers a wide zippered 180 degree opening, plus an internal zippered organiser pocket for storage of secure items.

The Traverse is pole-quiver compatible on both sides and includes extended side pockets that reach toward the back for massive storage. Front pockets are symmetrical with dual bottle pockets; special compression stitching ensures bottles fit snug and stay secure, while cord locks offer added retention.

Two zippered top shoulder pockets provide quick-access storage, while two zippered layered front pockets feature padding, air mesh for added comfort, and a sweat-proof liner to protect sensitive items. Together, these details make the Traverse the ultimate blend of capacity and race-day performance.

Available in five sizes for a precise fit: Extra Small, Small, Medium, Large, and Extra Large.

RECOMMENDED USE
Built for long-distance trail running, ultramarathons, fastpacking, and high-output mountain adventures where lightweight performance and large gear capacity are essential.

FEATURES
- Easy in and out bladder attachment with insulated bladder compartment layer.
- Max O2 Form™ for unrestricted breathing while maintaining a stable pack. Uses shock cord with good stretch for unrestricted breathing but also good rebound on the stretch for a stable ride. Patent Pending.
- Quiet and large zipper pulls that are bounce free, easy to see, grab and pull.
- Lightweight, soft, breathable, but strong, large-holed mesh pulls moisture away from the body to keep skin dry and cool.
- Sweat proof webbing—won’t absorb water or get saturated and heavy.
- Silicone and PU coated feather-weight nylon fabrics resist water, abrasion and tears.
- Extra plush no-chafe binding, soft and non-abrasive against skin and clothing.
- Safety stitched bar tack on all stress points.
- Zig zagged stitching over elastic for ultra-durability, increased stretch and rebound.

FRONT
- Symmetrical dual zippered top shoulder stretch pockets (with internal security elastic straps) for easy-access storage of small essentials, ideal for GPS or tracking devices, both with large easy-grab zip-pulls. and one with safety whistle.
- Symmetrical dual large hydration pockets for up to 800ml soft flasks (included), with adjustable bungee cord locks to prevent flasks slipping down as fluids empty.
- Two sweat-proof large vertical zippered pockets (sitting directly behind the hydration pockets), again with large easy-grab zip-pulls.
- Two large open-top dump pockets low down with compression toggles.
- Max O2 Form™ for unrestricted breathing while maintaining a stable pack. Uses shock cord with good stretch for unrestricted breathing but also good rebound on the stretch for a stable ride. Patent Pending.

SIDE
- Two deep open-top side pockets extend toward the rear for massive capacity with built-in compression toggles, perfect for large bottles or soft flasks.

BACK
- Externally accessible dedicated bladder compartment with insulated and padded layer against the back.
- Simple, fast, easy in-and-out bladder attachment system.
- Large 180 degree clamshell style zippered rear storage compartment with large internal zippered compartment for secure storage (with key-clip).
- External stretch mesh open-top compression compartment
- 2x adjustable straps for load compression.
- 2x trekking pole bungee attachments.

ERGOFIT TECHNOLOGY
SHOULDER STRAPS
Human shoulders aren’t straight, so a pack’s shoulder straps shouldn’t be either. Longer straps allow the back portion to sit deeper on the neck to prevent any rubbing. This addition in length helps to create slope as the straps come over the top of the shoulders and around the neck following the natural curve of the body. The harness then follows an S curve around the arms and chest area to avoid any hindrance to the running motion.

WEIGHT DISTRIBUTION
The harness construction also helps to keep the pack balanced at any capacity to ensure the same high quality fit empty or fully loaded. In regards to balance, the load is positioned lower on the back closer to the body’s center of gravity, the hips. This placement helps to stop unnecessary energy expenditure during the long haul.

ULTRACOOL SYSTEM
A collection of technologies designed to dissipate heat and keep you cool. This system allows you to maintain a lower body temperature by dispersing heat during intense activity, keeping you performing at the highest level.

SMALL FOOTPRINT
Anatomically engineered, the pack covers only what is necessary on the body to keep it secure thus allowing for your temperature to remain cooler during heavy energy exertion.

ULTRACOOL MESH
The most breathable mesh on the market, this 3-layered, large holed honeycomb mesh is made from polyester which helps to draw moisture away from the skin without absorption.

INSULATED BLADDER COMPARTMENT
Made of Mylar, the insulated compartment reflects and traps temperatures to help keep fluids hot or cold. Additional foam with air pockets creates more space for the insulation to take effect.

Max02™ STERNUM
Shock cord securing system that helps create a comfortable & natural breathing pattern while at the same time keeping the pack secure. The shock cord allows for stretch outward and 100% rebound which keeps the pack snug against your body empty or fully loaded with no restriction of movement.

SPECIFICATIONS
Volume Capacity: 20L
Hydration compatible: 800ml Soft Flasks (not included), 550ml UltraFlask hybrid bottles (not included), 500ml Soft Flasks (not included)
Reservoir compatible: 2 Litre bladder (not included)
Weight: ~499 grams / 17.6 oz. (without bottles or a bladder)
Colours: Pinyon Green

SIZING AT CHEST (UNISEX)
XS: 30 - 34 in. / 76 - 86 cm
SM: 33 - 37 in. / 84 - 94 cm
MD: 36 - 40 in. / 91 - 101.5 cm
LG: 39 - 43 in. / 99 - 109 cm
XL: 42 - 46 in. / 106.5 - 117 cm
Notes:
Measure wearing the clothes you intend to wear
A vest full of gear will fit smaller

UltrAspire Traverse UK & Ireland supplier | Ultramarathon Running Store is the UltrAspire UK and Ireland online supplier/dealer/distributor/retailer. We also ship internationally, including to the US & Canada, Europe, Australia, New Zealand and the rest of the world. Product pages include links to UltrAspire reviews and UltrAspire videos. If you have any question or request please Contact Us.

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