Hydro Flask 21 Oz Standard Flex Straw Cap Bottle - Birch

Insulated stainless steel bottle with TempShield double-wall vacuum insulation keeps drinks cold up to 24 hours or hot up to 12 hours. The Flex Straw Cap offers leak-proof convenience when closed and includes a trimmable straw for a custom fit. Durable Color Last powder coat in Birch finish resists peeling and cracking.

Advantages

Made from 18/8 pro-grade stainless steel, this bottle is BPA-free and phthalate-free. The standard mouth is compatible with all Hydro Flask standard mouth caps. Dishwasher safe for easy cleaning.

Suitable for

• Everyday hydration at work, school, or gym
• Outdoor activities like hiking and camping
• Keeping beverages at ideal temperature throughout the day

Key specifications

• Capacity: 21 oz (621 ml)
• Bottle material: 18/8 pro-grade stainless steel
• Cap material: BPA-free polypropylene
• Insulation: TempShield double-wall vacuum
• Cold retention: up to 24 hours
• Hot retention: up to 12 hours
• Cap type: Flex Straw Cap
• Mouth type: Standard Mouth
• Color: Birch
• Coating: Color Last powder coat
• Dishwasher safe: Yes
• Leak-proof: Yes (when closed)
• Straw: Trimmable for custom fit

Recommendations

For best results, hand wash the cap and straw occasionally to maintain optimal performance. Avoid using with carbonated beverages or as a container for hot liquids when using the straw cap.