Brand: UltrAspire
Category: Running Vests & Packs
Recommended by Marco Brunyer, Mountain Runner — California
The Mountain Racer Waist Pack is a robust and spacious 3-liter pack designed for adventurers who demand durability and comfort in challenging terrains. Its innovative design and high-quality materials ensure that your essentials are securely stored and easily accessible during your outdoor pursuits. 1. Constructed with EnduraMesh XT™, a high-density blend featuring 30% UHMWPE ripstop for exceptional strength and durability. 2. Generous 3-liter capacity allows for ample storage of essentials, making it perfect for long hikes or trail runs. 3. Front kangaroo-style pocket includes an internal sleeve for your phone and a zippered pocket for organized storage of smaller items. 4. Two large side pockets equipped with compression straps and cord locks to securely hold sensitive gear. 5. Rear compartment accommodates an 800 mL Softflask with a locking cap, ensuring hydration is always within reach. 6. Compatible with UltrAspire Light Bracket for easy integration with various Lumen light models, enhancing visibility during low-light conditions. 7. Available in four sizes (Small to Extra Large) for a customizable fit, ensuring comfort during extended wear. The Mountain Racer Waist Pack is ideal for trail running, hiking, and other outdoor activities where lightweight and reliable gear is essential. It excels in rugged environments, providing secure storage for gear while maintaining comfort and accessibility. Perfect for outdoor enthusiasts of all skill levels, this pack is designed for those who venture into the mountains year-round, ensuring they are well-prepared for any adventure.
Price: $124.95
Marco Brunyer's review
Amazing “no bounce” belt. I’ve gone through countless belts, this is the one I’ve settled with. Amazing in all ways, construction, performance, capacity. It’ll blow you away.
Recommended by Marco Brunyer, Mountain Runner
Frequently asked questions
What does Marco Brunyer say about the Mountain Racer Waist Pack?
Amazing “no bounce” belt. I’ve gone through countless belts, this is the one I’ve settled with. Amazing in all ways, construction, performance, capacity. It’ll blow you away.
Why does Marco Brunyer recommend UltrAspire?
Marco Brunyer recommends the UltrAspire Mountain Racer Waist Pack for running vests & packs. Amazing “no bounce” belt. I’ve gone through countless belts, this is the one I’ve settled with. Amazing in all ways, construction, performance, capacity. It’ll blow you away.
Is the Mountain Racer Waist Pack a good running vests & pack?
Yes — Marco Brunyer recommends the Mountain Racer Waist Pack by UltrAspire as their running vests & packs pick. Amazing “no bounce” belt. I’ve gone through countless belts, this is the one I’ve settled with. Amazing in all ways, construction, performance, capacity. It’ll blow you away.
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What other hosts are saying
4 experts recommend the UltrAspire Mountain Racer Waist Pack.
Keifer Gilbert, Endurance Enthusiast, Adventurer, Coach, Father, Sober Dude
Without a doubt the most underrated waist belt on the market. Second to none in terms of storage capacity, materials used and overall fit. Absolutely no bounce in this thing and it can store both a 1L and 800ml flask. I'm a heavy sweater so this thing has been a game changer for me. It also is compatible with UltraSpire's waistlight system, which simplifies race day logistics in many ways.
Recommended in 10 Products I Actually Use
Miles Victors, Outdoor Enthusiast and Mountain Athlete
Every run, every ultra, every time. Hydration, lighting, storage, emergency gear, etc. Can't go wrong with this one, probably my number 1 recommendation.
Recommended in 10 Products I Actually Use
I love this belt. I've been wearing it since the beginning of 2026, raced twice in it already, and wear it for almost every training run. Zero bounce, fits an 800ml bottle, and plenty of pockets for snacks, your phone, etc. Plus you can attach their light to the front!
Recommended in Everyday favorites
