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    Rendezvu
    On a mission to get more people to enjoy the outdoors© 2026
    RendezvuAboutFor HostsFor BrandsFor Shoppers
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    Brand: Dera Running

    Category: Trail & Ultra Gear

    Recommended by Jamie Hunyor, Ultrarunner & field botanist — Nevada City, Calif.

    The B01 Trail Running Belt by Dera Running is an innovative and adjustable solution designed for active runners. With its unique dial mechanism and included hydration flask, it ensures a comfortable and secure fit while keeping you hydrated on the go. 1. Unique dial adjustment system for a customizable fit that moves with your body. 2. Includes a 575ml HydraPak UltraFlask for convenient hydration during long runs. 3. Lightweight and breathable materials designed to minimize chafing and enhance comfort. 4. Ample storage capacity for essentials like keys, snacks, and energy gels. 5. Reflective detailing for increased visibility during low-light conditions. 6. Versatile design suitable for various activities, including trail running, hiking, and cycling. 7. Durable construction to withstand the rigors of outdoor adventures. The B01 Trail Running Belt is ideal for trail runners and outdoor enthusiasts seeking a reliable hydration solution during their activities. It performs best in varied terrains and conditions, providing comfort and accessibility for both novice and experienced athletes. Whether you're training for a marathon or enjoying a weekend hike, this belt excels in keeping your essentials secure and your hydration within reach. Perfect for year-round use, it adapts seamlessly to any running or outdoor scenario.

    Price: $129

    Expert Review

    Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!

    Recommended by Jamie Hunyor

    Frequently asked questions

    What does Jamie Hunyor say about the Dera B01 Trail Running Belt?

    Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!

    Why does Jamie Hunyor recommend Dera Running?

    Jamie Hunyor recommends the Dera Running Dera B01 Trail Running Belt for trail & ultra gear. Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!

    Is the Dera B01 Trail Running Belt a good trail & ultra gear?

    Yes — Jamie Hunyor recommends the Dera B01 Trail Running Belt by Dera Running as their trail & ultra gear pick. Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!

    Rendezvu
    Dera B01 Trail Running Belt by Dera Running — recommended by Jamie Hunyor
    Wearables

    Dera B01 Trail Running Belt

    Jamie Hunyor
    Jamie HunyorRecommended in “Long run essentials”
    Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!
    Purchasing through this link directly supports Jamie
    Wearables

    Dera B01 Trail Running Belt

    Jamie Hunyor
    Jamie HunyorRecommended in “Long run essentials”
    Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!
    Purchasing through this link directly supports Jamie
    Dera B01 Trail Running Belt by Dera Running — recommended by Jamie Hunyor

    This product is for…

    Runners who want a no-bounce belt with enough storage to skip a vest on long runs — especially those carrying flasks, phone, nutrition, and small gear like a water filter. Suits racers and training runners who need a precise, adjustable fit on the move.

    Worth noting…

    The longer zipper pull on the back pocket and small shirt-tuck grippers are called out as practical details. Notes are uniformly positive with no fit, sizing, or durability caveats raised.

    More from Jamie Hunyor's Long run essentials

    • Squirrels Nut Butter All Products from Squirrel's Nut Butter!
    • Janji M's 8" Trail Half Tight
    • HydraPak 42mm Filter Cap
    • Hoka Men's Tecton X 4 Shoes

    View Jamie Hunyor's expert gear recommendations on Rendezvu