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    Rendezvu
    On a mission to get more people to enjoy the outdoors© 2026
    RendezvuAboutFor HostsFor BrandsFor Shoppers
    LegalTermsPrivacy
    ResourcesDocsContactFeedback
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    Brand: Tantrums

    Category: Running Hydration Reservoirs

    Recommended by Mary Tyler, Trail Runner — San Jose, CA

    Highlights: lightweight

    The Crest 6 hydration pack is a lightweight and ergonomic solution for outdoor enthusiasts, designed to provide optimal hydration without the bulk of traditional vests. Weighing only 153 grams, it ensures a bounce-free experience, allowing you to focus on your performance during long runs or hikes. 1. Ultra-lightweight design at just 153 grams for maximum comfort during extended use. 2. Zero bounce technology locks the pack securely to your torso, enhancing stability during movement. 3. Includes two 600ML HydraPak flasks for easy hydration on the go. 4. Rear reservoir capacity of up to 1.5 liters, providing ample water supply for long adventures. 5. Constructed from 75% nylon and 25% mesh for durability and breathability. 6. Compatible with Salomon quiver and features pole loops for versatile carrying options. 7. Ideal for fast-paced activities like trail running, mountain biking, and ultra-marathons. The Crest 6 is designed for active individuals who engage in high-intensity outdoor activities, such as trail running, hiking, or mountain biking. It excels in warm weather conditions where lightweight and breathable gear is essential. Ideal for both novice and experienced athletes, this hydration pack is perfect for long-distance events, day hikes, or training sessions, ensuring you stay hydrated without the hassle of bulky equipment.

    Price: $225

    Expert Review

    This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!

    Recommended by Mary Tyler

    Frequently asked questions

    What does Mary Tyler say about the Crest 6?

    This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!

    Why does Mary Tyler recommend Tantrums?

    Mary Tyler recommends the Tantrums Crest 6 for running hydration reservoirs. This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!

    Is the Crest 6 a good running hydration reservoir?

    Yes — Mary Tyler recommends the Crest 6 by Tantrums as their running hydration reservoirs pick. This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!

    More from Mary Tyler's Dirt Run Essentials

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    Crest 6 by Tantrums — recommended by Mary Tyler
    Nutrition & Hydration

    Crest 6

    Mary Tyler
    Mary TylerRecommended in “Dirt Run Essentials”
    This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!
    Purchasing through this link directly supports Mary
    Nutrition & Hydration

    Crest 6

    Mary Tyler
    Mary TylerRecommended in “Dirt Run Essentials”
    This thing fits like a glove. No bounce means no significant chafing, and it holds HELLA supplies. Love the ease of use and lightweight feel. Once it's on you can just enjoy the run!
    Purchasing through this link directly supports Mary
    Crest 6 by Tantrums — recommended by Mary Tyler

    This product is for…

    Runners and mountain-goers who need to carry meaningful supplies on longer efforts without being weighed down or restricted. Notes also flag it as a good fit for petite or female frames, as sizing runs true rather than skewing large like typical unisex gear.

    Worth noting…

    The updated neck construction is soft and chafe-free, and stretchy mesh pockets make on-the-move access easy. One host flags brand enthusiasm for Tantrums as a start-up, which is a personal preference rather than a product attribute.
    • HYPERLYTE H1C
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    • The Feed Carbs Fuel Original Energy Gel
    • Terignota Women's Tahoma Half Tight
    • Backcountry Salomon Quiver
    • Oakley Sutro Lite Prizm Sunglasses
    • COROS APEX 4
    • HydraPak Velocity™ 1.5L

    View Mary Tyler's expert gear recommendations on Rendezvu