Brand: Tantrums

    Category: Running Hydration Reservoirs

    Recommended by Seth LaReau, Trail runner. Writer. Founder and author of Trail Waves. — Bay Area, California

    Highlights: durable, comfortable

    The Crest 6 is a lightweight and versatile hydration vest designed for trail enthusiasts, offering a secure fit and ample storage for hydration needs during long runs. With its zero-bounce design and thoughtful features, it ensures you stay focused on your performance. 1. Weighs only 153 grams, providing a featherlight feel for maximum comfort. 2. Zero bounce technology keeps the vest securely in place, allowing for unrestricted movement. 3. Includes two 600ML HydraPak flasks for convenient hydration on the go. 4. Rear reservoir capacity of up to 1.5 liters for extended hydration during long outings. 5. Compatible with Salomon quivers and features pole loops for easy access to trekking poles. 6. Constructed from 75% nylon and 25% mesh for durability and breathability. 7. Designed for both fast-moving ultras and all-day mountain runs, catering to various trail conditions. The Crest 6 is ideal for trail runners and outdoor adventurers seeking a reliable hydration solution during their activities. It excels in rugged terrains and long-distance events, providing essential hydration support in warm or challenging conditions. Perfect for both novice and experienced athletes, this vest is a must-have for anyone looking to enhance their trail running experience, especially during the peak trail season.

    Price: $323

    Who it's for
    Runners seeking a no-bounce hydration vest for training and racing, from shorter races to longer efforts. Notes specifically mention use at events like Broken Arrow and Hellbender, suggesting it handles race-mandatory-gear loads.
    What people are saying
    Hosts consistently highlight zero bounce and exceptional comfort, including a collar design that avoids chafing. Multiple hosts call it their go-to for both training and racing, with no dissenting views in these notes.
    Worth noting
    Carries two 600ml soft flasks (larger than the typical 500ml) plus pockets for phone, gels, and race kit. Notes are uniformly positive with no fit, sizing, or durability caveats flagged.

    Seth LaReau's review

    The comfiest, least bouncy hydration vest I've used.

    Recommended by Seth LaReau, Trail runner. Writer. Founder and author of Trail Waves.

    Frequently asked questions

    Who is the Crest 6 for?

    Runners seeking a no-bounce hydration vest for training and racing, from shorter races to longer efforts. Notes specifically mention use at events like Broken Arrow and Hellbender, suggesting it handles race-mandatory-gear loads.

    What do experts say about the Crest 6?

    Hosts consistently highlight zero bounce and exceptional comfort, including a collar design that avoids chafing. Multiple hosts call it their go-to for both training and racing, with no dissenting views in these notes.

    What should you know before buying the Crest 6?

    Carries two 600ml soft flasks (larger than the typical 500ml) plus pockets for phone, gels, and race kit. Notes are uniformly positive with no fit, sizing, or durability caveats flagged.

    What does Seth LaReau say about the Crest 6?

    The comfiest, least bouncy hydration vest I've used.

    Why does Seth LaReau recommend Tantrums?

    Seth LaReau recommends the Tantrums Crest 6 for running hydration reservoirs. The comfiest, least bouncy hydration vest I've used.

    Is the Crest 6 a good running hydration reservoir?

    Yes — Seth LaReau recommends the Crest 6 by Tantrums as their running hydration reservoirs pick. The comfiest, least bouncy hydration vest I've used.

    More from Seth LaReau's Trail Favorites

    View Seth LaReau's expert gear recommendations on Rendezvu

    What other hosts are saying

    9 experts recommend the Tantrums Crest 6.

    Corinne Shalvoy, Ultramarthoner | Commentator | Podcast Host | Coach | Community Builder

    My go to for shorter races and tons of my long runs during training. Zero bounce. The bottles are 600ml vs the typical 500, I use the back low pocket for my phone. Doesn't chafe my collarbone!

    Recommended in The best vests in the game

    Mercedes Siegle-Gaither, Professional Trail and Ultra Runner

    New pack, and I’m loving it. The 600mL bottles are clutch for staying hydrated for longer efforts.

    Recommended in Training Gear

    Hunter Macy, Founder @ Rendezvu

    No bounce vest, extra water carry. So many people on Rendezvu recommend, but super stoked to try this for Broken Arrow.

    Recommended in Broken Arrow Triple Crown :)

    Lauren Puretz, ultra trail running

    best light weight vest around

    Recommended in 10 Products I Actually Use

    Shelby Farrell, Athlete. Marketing Professional. Cat Mom.

    The first thing you notice when you pick up this vest is how insanely light it is. Second: super soft materials, with a special lil comfort collar. Then you load it up and discover it doesn’t bounce!! What more could you want in a running vest?

    Recommended in Kodiak 100

    Joachim Cassel, Mountain Runner. Community & Events Marketing Professional. Celsius Addict.

    Tantrums pride themselves on "no bounce" and they really deliver. Two 600ml soft flasks plus loads of storage for phone, gels, etc., make this the perfect hydration pack.

    Recommended in The Bear 100 Gear List

    Anna Louden, Professional Trail Runner

    the first vest I've ever used with literally zero bounce. Also has a surprising amount of capacity - I fit the entire UTMB required gear list in this

    Recommended in Racing Essentials

    Troy Meadows, Ultra Runner | Host of the MidPacker Pod | Entrepreneur

    My go to vest for training and racing. Even managed to cram all the Hellbender Mando kit into this thing and it worked like a charm.

    Recommended in My Trail Quiver