Hydro Flask 21 oz Fir Green Standard Mouth Insulated Water Bottle – Leakproof & Cupholder-Ready

Hydro Flask 21 oz Fir Green: a versatile hydration companion

Designed for everyday life and outdoor adventures, the Hydro Flask Standard Mouth bottle in Fir Green blends durable stainless steel with thoughtful design. The double-wall vacuum insulation, often called TempShield, helps keep beverages at the temperature you expect—cold enough to refresh on a hot day, or warm enough to comfort during a chilly morning.

The 21 oz size offers a comfortable balance of capacity and weight, so you can refill and carry it through your routine without being weighed down. The included Flex Cap seals securely to help prevent leaks, making it easy to toss the bottle into a bag or backpack when you're on the move. The bottle's handle is designed for a relaxed grip, whether you're commuting, hiking, or hitting the gym.

What you may notice about its performance

• Cold drinks can stay crisp for up to 24 hours, preserving the chill on hot days.
• Hot beverages can stay warm for up to 12 hours, keeping tea or cocoa ready when you need it.
• Double-wall vacuum insulation minimizes condensation and keeps interior flavor pure.
• Pure taste is supported by pro-grade stainless steel that resists flavor transfer between fills.

Practical design that travels with you

• The bottle is cupholder-friendly, fitting into most car, stroller, and stadium cupholders, making it convenient on the go.
• Leakproof when closed, so you can carry it in a bag or backpack without worrying about spills.
• Easy to clean—both lid and bottle are dishwasher safe, helping you stay on top of routine cleaning.
• Lightweight and sturdy, the Fir Green finish adds a visually appealing touch to your daily hydration.

Whether you’re packing it for a day hike, bringing it to the office, or keeping it accessible for family outings, this Hydro Flask bottle is designed to be reliable without overpromising results. It offers warmth when needed, cooling performance for extended periods, and practical features that support a wide range of hydration needs.