The Nucleus 'front bottle pack' is a new addition to the 2022 UltrAspire vest lineup. Featuring the Ergo X Harness, a patented harness system defined by its distinct shape and fit, which allows freedom of movement and keeps the weight and pressure points off soft tissue areas resulting in better blood flow and body cooling. The centralised front bottle pocket is double layered, meaning a bottle can be carried on the front for easy access, as well as nutrition, gloves, flashlight or a hat in the smaller overlapping open-top 4-way stretch mesh pocket. The back of the pack has two separate full width rear compartments, overlapping each another. One for secure storage with an easy-grab and quiet vertical zipper as well as sweat proof fabrics to keep contents safe from moisture and sweat (ideal for phone, keys, wallet etc.). The outer larger capacity stretch mesh compartment is accessible on-the-go with its automatic magnetic closure (ideal for waterproof, headlamp, spare batteries etc). This pack features the UltrAcool Light Mesh for added durability and breathability. The Max02 Waist Closure system provides a personalised fit with its easy shock-chord adjustment, as well as facilitating uninterrupted natural breathing. This vest comes standard with 1x UltraFlask 550 Hybrid Bottle. One size fits most.

RECOMMENDED USE
Extremely lightweight race vest for the minimalist runner who wants the fastest possible access to hydration.

FEATURES
- Ergo X Harness
- Max O2 Waist Closure for unrestricted breathing while maintaining a stable vest with dialled-in fit and easy adjustment. Uses shock cord with good stretch for unrestricted breathing but also good rebound on the stretch for a stable ride. Patent Pending.
- Magnon pocket for sweat-free pills, with automatic magnetic closure for rapid access to pills and other essentials. Patent pending.
- Quiet zipper pulls that are bounce free, easy to see, grab and pull
- Silicone and PU coated feather-weight nylon fabrics resist water, abrasion and tears.
- Plush feeling micro-fiber polyester edges, soft and non-abrasive against skin and clothing.
- Sweat proof webbing—won’t absorb water or get saturated and heavy.
- Safety stitched bar tack on all stress points.
- Zig zagged stitching over elastic for ultra-durability, increased stretch and rebound.
- Reflective details on the front and back for nighttime visibility.

SPECIFICATIONS
Volume Capacity: 5L
Hydration compatible: 1x 550ml UltraFlask soft flask bottle capacity ( included )
Reservoir compatible: not compatible
Weight: ~136 grams without bottle, ~204 grams with bottle
Colours: Ice Blue