21 oz Lightweight Standard Mouth Trail Series™

21 oz Lightweight Standard Mouth Trail Series™

Size Chart
Hydro Flask Pack Size Chart
Available Sizes S / M M / L
Torso
Measurement
18 - 19 in 19 - 22 in
43 - 48 cm 48 - 56 cm
Hip
Measurement
22 – 46 in 26 – 46 in
56 – 117 cm 66 – 117 cm
  1. 1. Torso Measurement

    • A. Bring your chin to your chest and feel for the most prominent bony bump where the slope of your shoulders meets the back of your neck. This is your C7 vertebra, and the top of your torso measurement.

    • B. On each side of your body, feel for the top of your hip bones, just below the sides of your ribs. With fingers pointing forward and thumbs pointing backward, draw an imaginary line between your thumbs. This is the bottom of your torso measurement.

    • C. Stand up straight and have a friend with flexible measuring tape measure the distance between your C7 vertebra and the imaginary line between your thumbs. That’s your torso measurement. If you are between pack sizes, go with the smaller size.

  2. 2. Hip Measurement

    While your torso measurement is the best indicator of your pack size, it’s still important to check your hip size when using a hipbelt. To find your hip measurement, wrap a flexible tape measure around the top of your hip bones, just below the sides of your ribs. This measurement is slightly higher than your waistline

<div class="description-pdp-content-text"> <h2>Less weight. More backcountry.</h2> <p>Ridiculously light, and durable enough for any trail, our 21 ounce Standard Mouth Lightweight Trail Series™ bottle is 25% lighter than our other 21 ounce bottles and provides the best cold hydration experience for your longest adventures. The narrow Standard Mouth opening is ideal for quick sips on the trail, and the slim bottle profile stashes easily into a pack pocket. Engineered to deliver lasting cold refreshment with TempShield™ insulation in an innovative lightweight stainless steel design. </p></div>

Less weight. More backcountry.

Ridiculously light, and durable enough for any trail, our 21 ounce Standard Mouth Lightweight Trail Series™ bottle is 25% lighter than our other 21 ounce bottles and provides the best cold hydration experience for your longest adventures. The narrow Standard Mouth opening is ideal for quick sips on the trail, and the slim bottle profile stashes easily into a pack pocket. Engineered to deliver lasting cold refreshment with TempShield™ insulation in an innovative lightweight stainless steel design.

Trail Series 21 oz Wide Mouth Lightweight Hydro Flask
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Features
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Lightweight

25% lighter than our 21 oz standard mouth bottles means this lightweight stainless steel bottle weighs less so you can do more.

Stainless Steel Construction

18/8 pro-grade stainless steel walls are thinner to reduce weight while maintaining durability.

Lightweight Flex Cap

Honeycomb™ insulated wide mouth cap with a flexible perforated strap and aluminum pivots cut weight in our leakproof design.

Details
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    Product Benefits

  • Ideal for lightweight hydration to keep you going further
  • Fits most backcountry hydration filters
  • Durable 18/8 Pro-Grade Stainless Steel construction
  • TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
  • Flexible perforated strap and aluminum pivots for added weight loss
  • BPA-Free and Phthalate-Free

Size & Dimensions

Volume 621 mL
Diameter 2.8"
Height 10.2"
Weight 9.6 oz
Technology
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Colder. Hotter. Longer.

Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.

We stand behind our products.

Hydro Flask guarantees this product with a limited lifetime warranty against manufacturer defects.

Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.

Hydro Flask supports non-profit organizations focused on building, maintaining, restoring, and providing better access to parks. Since 2017, we have been doing just that:

  • 92 Non-profits supported non-profits.
  • $1.5 million Dollars donated donated.
  • 26,043 Bottles donated bottles.