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    On a mission to get more people to enjoy the outdoors© 2026
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    Brand: Tantrums

    Category: Running Hydration Reservoirs

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

    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: $225

    Expert Review

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

    Recommended by Seth LaReau

    Frequently asked questions

    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

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    Rendezvu
    Crest 6 by Tantrums — recommended by Seth LaReau
    Nutrition & Hydration

    Crest 6

    Seth LaReau
    Seth LaReauRecommended in “Trail Favorites”
    The comfiest, least bouncy hydration vest I've used.
    Purchasing through this link directly supports Seth
    Nutrition & Hydration

    Crest 6

    Seth LaReau
    Seth LaReauRecommended in “Trail Favorites”
    The comfiest, least bouncy hydration vest I've used.
    Purchasing through this link directly supports Seth
    Crest 6 by Tantrums — recommended by Seth LaReau

    This product is for…

    Runners who prioritize a bounce-free fit for shorter races and training runs. Also suits those needing enough storage for mandatory race kit, phone, gels, and extra water.

    Worth noting…

    Multiple hosts use it as their go-to for both training and racing, and one confirmed it fits a full mandatory race kit. Notes are uniformly positive with no criticism or caveats mentioned.
    Open Fuel Reusable Funnel Scoop
  1. Open Fuel Drink Mix Sachets
  2. Open Fuel Gel Flask
  3. Mount to Coast M1
  4. View Seth LaReau's expert gear recommendations on Rendezvu