21 oz Standard Mouth Bottle
Product details
Stay hydrated all day long with our premium 21 oz Stainless Steel Water Bottle. Built for life on the go, this reusable and refillable bottle is designed to keep your drinks perfectly chilled for up to 24 hours or piping hot for up to 12, thanks to its TempShield™ double-wall vacuum insulation and Honeycomb™ Insulated Cap. Crafted from durable 18/8 pro-grade stainless steel, it ensures pure taste with no flavor transfer. The Color Last™ powder coat adds a vibrant, sweat-free finish. Cup holder compatible and perfectly sized for your backpack, it's your ideal hydration companion for any adventure. Plus, it's BPA-free and dishwasher safe for easy cleaning. Don't wait - grab yours today and experience the ultimate in on-the-go hydration!
- Keeps drinks cold for 24 hours, hot for 12
- Durable 18/8 pro-grade stainless steel construction
- TempShield™ double-wall vacuum insulation
- Honeycomb™ Insulated Cap for maximum temperature retention
- Leakproof Flex Cap
21 oz Standard Mouth Bottle
Product details
Hydro Flask FAQ
Common questions about Hydro Flask
Learn more about what makes Hydro Flask unique.
What is TempShield insulation?
TempShield is Hydro Flask's double-wall vacuum insulation — it keeps cold drinks cold for up to 24 hours and hot drinks hot for up to 12 hours by eliminating heat transfer between the walls.
Which Hydro Flask size is right for me?
The 21 oz is ideal for short outings and fits most cupholders. The 32 oz is the all-day everyday choice. The 40 oz is best for long hikes, gym sessions, or anyone who needs to stay hydrated all day without refilling.
What makes Hydro Flask worth it?
Beyond the colour range, Hydro Flask pairs proven TempShield insulation with a durable powder-coat finish, a huge accessory ecosystem (straw lids, boots, slings), and a lifetime warranty — a stylish, leak-resistant bottle built to last for years.
Is Hydro Flask lead-free?
Yes — Hydro Flask has been proudly lead-free for over a decade, with no lead used anywhere in its construction, which is a deciding factor for many buyers comparing insulated bottles.
