Home > Waist Packs / Belts > UltrAspire >

UltrAspire Speedgoat 4.0 Waist Pack
UltrAspire Speedgoat 4.0 Waist Pack
 
Price: £70.00
Order by 2pm Monday–Friday for same-day dispatch. Delivery & Returns • Contact Us
Quantity:

Description
 
UltrAspire Speedgoat 4.0 Waist Pack
2 × 550ml bottles included · Twin-bottle waist belt · 1.75L storage

A high-capacity twin-bottle running waist belt designed around two rear mechanical-locking insulated bottle holsters, with two UltraFlask 550 Hybrid Bottles included for a total of 1.1 litres of hydration. The bottles sit towards the back of the hips, keeping the load close to the body and away from the natural arm swing while remaining accessible on the move.

The Speedgoat 4.0 combines its two-bottle hydration system with 1.75 litres of storage for carrying nutrition, a large phone, spare layers and other equipment. A central zipped stretch pocket provides secure storage, quick-stash pockets around the bottle holsters keep frequently used items accessible, and the enlarged front stretch pocket adds further capacity. Integrated shock cords provide attachment for folded Z-poles or a lightweight layer.

Features
  • Twin-bottle hydration design: carries two bottles around the rear of the hips while retaining separate storage for running and ultramarathon kit.
  • Two UltraFlask 550 Hybrid Bottles included: provide 1.1 litres of combined hydration capacity in flexible, semi-structured bottles.
  • Mechanical-locking bottle holsters: secure the bottles close to the body while allowing straightforward removal and return.
  • Insulated bottle holsters: help keep fluids cooler for longer.
  • Rear-hip bottle positioning: keeps the bottles away from the natural arm swing while running.
  • Low centre of gravity: positions hydration and carried equipment around the waist to aid stability and load distribution.
  • 1.75L storage capacity: provides substantially more equipment storage in addition to the two included bottles.
  • Central zipped stretch pocket: provides secure storage for equipment and items needed later.
  • Quick-stash holster pockets: keep nutrition, wrappers and other frequently accessed small items within reach.
  • Large front stretch pocket: accommodates a large phone, nutrition or other equipment.
  • Zipped side storage: provides additional organisation and secure carrying space.
  • Front shock cords: allow attachment of folded Z-poles or a lightweight jacket.
  • Dual-sided adjustment: allows the fit to be balanced from both sides.
  • Breathable non-slip webbing: helps dissipate moisture while reducing unwanted movement.
  • Aluminium buckle: provides secure closure and straightforward attachment and removal.
Specifications
Storage capacity: 1.75 litres / 107 cu in
Weight: 417g / 14.72oz
Fit: Adjustable, one size
Waist size: 28–40in / 71–102cm
Hydration included: 2 × UltraFlask 550 Hybrid Bottles
Bottle capacity: 550ml each / 1.1 litres total
Bottle carry: Twin rear mechanical-locking insulated holsters
Z-pole attachment: Yes
Dimensions: 9 × 8 × 3in
Gender: Unisex
Sizing & Fit

The Speedgoat 4.0 uses dual-sided waist adjustment, allowing the fit to be tightened evenly and positioned around the waist or hips. Its hydration load is carried towards the rear of the hips, keeping both bottles close to the body while leaving the front available for additional storage.

Size: One size
Waist: 28–40in / 71–102cm
Fit: Adjustable, unisex
Need help choosing?

Not sure which running waist pack or belt suits you? See our Running Waist Packs & Belts Guide for advice on carrying capacity, one- or two-bottle hydration, fit, reducing bounce and combining a waist belt with other hydration equipment.

For differences within the UltrAspire range, see our UltrAspire Waist Packs & Belts Guide.

If you are unsure whether the Speedgoat 4.0 is suitable for what you need, get in touch for straightforward advice.


Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 SPEEDGOAT 4.0 review August 17, 2026
Reviewer: Patrick Mc from Galway Republic of Ireland  
I found that I wanted something that didn't leak, that was very comfortable in the waist, that would help me train for a sub-3-hour marathon. I've tried various different running belts, but always end up with a similar problem. Not enough space to carry what I need for my 20 to 30 km training runs.
When I received this product, wrapping, packaging was nothing exciting and it took about 2 weeks to arrive.
But when I tried it on and went running with it, it was very, very comfortable. You can feel the difference in the design, in how comfortable it is, how easy it is to tighten around your waist, that there's zero movement. The bottles are excellent also, because they're 500 ml, but they have a wider top, so two mouthfuls, and that's enough and they dont leak! There's no need to be sucking on a bottle, trying to get out what you need. So, really clever design. Can't recommend this product highly enough for anyone that does running and needs a drink along the way.

Was this helpful?


Related categories:

Waist Packs / Belts > UltrAspire
Waist Packs / Belts