Hydro Flask

21 oz Lightweight Standard Mouth

Colour: Obsidian

Lightweight insulated flask built for the trail

Nobody likes lukewarm bottled water on a hot hike. We’d take ice-cold liquid refreshment every time. The problem is that packing a double-wall, insulated vacuum flask adds unjustifiable weight to your pack, even on a day hike. But Hydro Flask’s Lightweight Trail Series are 25% lighter than the standard bottles in the Hydro Flask range, thanks to an innovative thin wall stainless-steel design. This flask’s practical 21oz (600ml) capacity is the ideal size for big days spent hiking and hillwalking. Plus, the standard mouth design guarantees dribble-free drinking, so now it is easy to enjoy icy-cold, refreshing drinks as far as your spirit of adventure takes you

    • Versatile 21oz (621ml) capacity makes this the ideal flask for day hikes and everyday use
    • Lightweight thinner wall construction is 25% lighter than the standard Hydro Flask 21oz bottle
    • Honeycomb insulated wide mouth cap with a flexible perforated strap and aluminium pivots cut additional weight in a leakproof design
    • TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours
    • Made from durable 18/8 pro-grade stainless steel
    • BPA-free and phthalate-free
    • Fits most backcountry hydration filters
    • Lifetime Hydro Flask warranty
    • Volume: 621 ml
    • Diameter: 7.11 cm
    • Height: 25.09 cm
    • Weight: 272 g
    • Sustainability through longevity - Hydro Flask offer a lifetime guarantee.
    • BPA-Free and Phthalate-Free

"It keeps my water cool and fresh, easy to hold while in movement and easy to clean!"

-Hazel, Verified Buyer


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