The Oxsitis Gravity 5W Hydration Vest is a lightweight and high-performance hydration rucksack designed specifically for trail runners seeking comfort, stability, and practical storage in a compact format. Designed to adapt to the female body shape, it offers an ergonomic fit that follows the natural movements of the body while maintaining complete freedom of movement. Shoulder cut-outs help prevent chafing, while the adjustable hip belt improves comfort and support. Adjustable chest and waist straps allow for a secure personalised fit without compressing the chest, and the high-positioned rucksack design helps reduce irritation in the lumbar region. With its 5-litre capacity, it is ideal for short to medium-distance trail runs, providing space for essential gear without unnecessary bulk. Combining breathable materials, advanced ergonomics, and a precise adjustment system, the Gravity 5W delivers lasting comfort and stability across all types of terrain.
Product Features:
• 5L trail running hydration vest designed for short to medium-distance runs
• Lightweight and compact design for maximum freedom of movement
• Developed with a focus on comfort, stability, and performance
• Specially adapted to the female form for better comfort and fit
• Ergonomic construction follows body movements to reduce restriction while running
• Includes two 500ml flasks for quick and convenient hydration access
• Compatible with a hydration bladder for increased carrying capacity
• Compatible with pipette kits to customise the hydration system
• Integrated safety whistle included, suitable for many trail race requirements
Storage & Organisation:
• Large rear compartment for carrying a jacket, gloves, hat, or hydration bladder
• 6 expandable front pockets for easy access to hydration and nutrition while moving
• Front zipped pockets provide secure storage during runs
• Water-resistant zipped pocket protects valuables such as a phone or keys
• Compact design keeps essential gear organised without unnecessary weight
Comfort & Breathability:
• Breathable 3D mesh construction improves ventilation and helps reduce heat build-up
• Quick-drying fabric provides lasting comfort during extended efforts
• Helps reduce friction and improve comfort during intense activity
• Shoulder cut-outs improve mobility and freedom of movement
• Snug ergonomic fit helps minimise chafing and excess perspiration
• Short back stem positions the vest higher to reduce friction around the lumbar area
• Improved airflow for enhanced comfort on longer trail sessions
Fit & Stability:
• High-precision lateral tightening system for a personalised fit
• Ultra-resistant medical-grade Velcro adjustment system
• Adjustable length and tilt for improved comfort and support
• Two adjustable chest and abdominal straps provide secure positioning
• Designed to limit bounce and maintain stability on technical terrain
• Provides reliable support while allowing natural movement
Safety & Trail Performance:
• Reflective front details improve visibility during low-light or night-time runs
• Practical and accessible pocket layout designed for trail racing and training
• Built to deliver comfort, stability, and performance across varied trail conditions
What's Included:
• 2 × 500ml Soft Flasks
• Integrated Safety Whistle
• Reflective Elements
Specification:
• Capacity: 5 Litres
• Weight: 140g
• Materials: 66% Polyester, 30% Nylon, 4% Spandex
• Available sizes: XS/S, M/L
Sizes:
• XS/S: Chest size 75-85cm
• M/L: Chest size 80-100cm
See size guide for more information.
Fabric Composition
Material: Elastane 4%, Polyester 66%, Nylon 30%
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UK Deliveries
UK Mainland/ Scottish Highlands/ Isle of Man, Isle of Wight & Isles of Scilly
£3.95 Standard Delivery within 3-5 working days or FREE for all orders over £50
£4.95 Express Delivery within 2-3 working days
Northern Ireland
£3.95 Standard Delivery within 3-5 working days or FREE for all orders over £50
Orders are sent via Royal Mail
UK Return & Refund Policy
Orders can be returned within 60 days of receipt
The products must be in their original packaging, with all tags and in original condition
Returns are free
For faulty or damaged items, please contact Mountain warehouse Customer Service team
Please safely pack your items in secure, protective packaging to ensure they arrive undamaged. Fill out the return slip, and make sure to include it inside the package you're returning.
Please retain proof of postage until it has been confirmed that your refund has been processed.
Please note that items sold by Four Corners UK cannot be returned to Mountain Warehouse stores
Return address:
7 Harpford Units
Liverton Business Park
Exmouth
EX82NU
For more information or help, please contact Mountain Warehouse's Customer Care.
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