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Load image into Gallery viewer, Purple Hydro Flask water bottle on a white background
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Bottle
Load image into Gallery viewer, Hydro Flask 21 oz Standard Mouth Insulated Bottle

Hydro Flask 21 oz Standard Mouth Insulated Bottle

Vendor Hydro Flask
Regular price $26.21
Sale price $26.21 Regular price $34.95
25% Off Sold out
Unit price
/per 
Shipping calculated at checkout.
Color:
Beachplum Purple
Indigo
White
Black
Surf
Reef
Agave
Cascade
Fir
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Goji
Starfish
Mesa
Dew
Lupine
Trillium
Capri Blue
Shale Gray
This is a pre order item. We will ship it when it comes in stock.
In stock, 4 units

SKU: S21CSX526

Size Chart

The perfect size for life on the move. The Hydro Flask 21 oz Standard Mouth Bottle is designed to keep up with your busiest days. Compact enough to stash in a small shoulder bag, backpack side pocket, or car cup holder—yet large enough to keep you hydrated for hours—it’s no surprise this size is a long-time best seller.

Featuring TempShield™ double-wall vacuum insulation, this bottle keeps cold drinks cold for up to 24 hours and hot beverages hot for up to 12 hours. Made from durable 18/8 pro-grade stainless steel, it delivers pure taste without flavor transfer, and the sweat-free powder coat finish adds grip and durability.

Whether you’re commuting, traveling, hiking, or running errands, the 21 oz Standard Mouth Bottle is a versatile, reliable hydration companion you can count on every day.

Best For

  • Everyday hydration
  • Commuting and travel
  • Hiking and outdoor activities
  • Work, school, and gym use

Key Features

  • TempShield™ Insulation: Double-wall vacuum insulation keeps drinks cold up to 24 hours and hot up to 12 hours.
  • Portable Size: Middle-of-the-road capacity that’s easy to carry and pack.
  • Durable Construction: Made with 18/8 pro-grade stainless steel for long-lasting performance.
  • Pure Taste: Won’t retain or transfer flavors.
  • Sweat-Free Finish: Durable powder coat (or stainless option) keeps hands dry.
  • BPA-Free: Made without BPA or phthalates.
  • Lifetime Warranty: Backed by Hydro Flask’s lifetime guarantee.

Specifications

  • Capacity: 21 fl oz (621 mL)
  • Mouth Diameter: 1.91 in (48.5 mm)
  • Bottle Height: 10.4 in (265 mm)
  • Weight: 10.4 oz (295 g)
  • Material: 18/8 pro-grade stainless steel
Customer Reviews