IRON °FLASK 40 oz Dark Rainbow Camping & Hiking Insulated Water Bottle with Straw

All-in-one hydration for outdoors

The IRON °FLASK 40 oz Dark Rainbow Camping & Hiking Hydration Flask is built to keep pace with your outdoor days. Its generous 40 oz capacity means fewerrefills on long hikes, while the vibrant dark rainbow finish adds personality to your gear.

Insulation and sweat-free surface

Double-wall insulation keeps the exterior comfortable to touch and sweat-free, so you can grab it mid-activity without a chill or slip. It preserves cold for up to 24 hours and hot for up to 12 hours, making it versatile across weather conditions and activity levels.

• Cold retention up to 24 hours for refreshing water on the trail
• Hot beverages stay heated for up to 12 hours for on-the-go warmth
• Sweat-free exterior that stays comfortable to hold

Triple lids for flexible usage

Three leak-proof lids provide sipping options, quick access, and secure storage. The Carabiner Straw Lid includes two straws for sharing or solo use, the Flip Lid offers one-handed access, and the Stainless Steel Lid (plastic interior) delivers rugged sealing.

• Carabiner Straw Lid with two straws for easy sipping
• Flip Lid for fast access during activities
• Stainless Steel Lid with inner plastic and outer stainless design

Material, care, and safety

Crafted from 18/8 premium stainless steel, this bottle is BPA-free and non-toxic. It won’t impart a metallic taste and resists rust. For the best finish, hand wash with warm soapy water.

Designed for life on the go

The dark rainbow finish pairs well with outdoor gear, gym bags, or daily commutes. Its wide mouth makes it easy to add ice and thoroughly clean the interior, ensuring versatility from dawn hikes to after-work workouts.

• Wide mouth for ice cubes and easy cleaning
• Colorful finish suited for outdoor and gym aesthetics

Notes on size and compatibility

Cupholders typically fit only smaller bottle sizes; the 40 oz model may not fit standard cupholders. This bottle is optimized for backpacking days and longer outings.

Best uses and gifts

Ideal for hikers, campers, and anyone who values reliable hydration on the go. The sturdy construction and striking finish make it a thoughtful gift for outdoor enthusiasts.

Whether you’re tackling a rugged trail, setting up a campsite, or commuting to the gym, this bottle is designed to support your hydration routine without forcing promises—just possibilities.