Klean Kanteen 18 oz Classic water bottle with Flip Seal Sport Cap, Blue — Leakproof stainless steel with straw

The Klean Kanteen 18 oz Classic with Flip Seal Sport Cap (Corsair) is a durable, 100% leakproof stainless steel bottle designed for easy sipping on the go.

Engineered to replace single-use plastics, this compact 18 oz bottle pairs a narrow, travel-friendly profile with a flip-up ergonomic spout and optional stainless steel straw. Constructed from 90% post-consumer recycled 18/8 stainless steel and finished with Klean Kanteen’s chip-resistant Klean Coat, it gives you a safe, low-waste hydration option that fits most cup holders and day bags.

How does the Flip Seal Sport Cap make drinking easier?

The Flip Seal Sport Cap offers a simple one-handed flip action to open and close an ergonomic spout, so you can sip without unscrewing a lid. The cap seals fully when closed for leak-free transport and includes a removable stainless steel straw for versatile sipping preferences.

• Ergonomic spout opens and closes with a single flip
• 100% leakproof closure when properly sealed
• Includes removable stainless steel straw for straighter sipping
• Easy-grip handle on the cap for carrying or clipping

Is this bottle safe and sustainable for everyday use?

Yes — the bottle is made from certified 90% post-consumer recycled 18/8 stainless steel and uses BPA-free, non-toxic materials throughout. The Klean Coat finish improves durability while helping the bottle avoid chips and scratches, extending usable life and cutting down single-use waste.

• 90% post-consumer recycled 18/8 stainless steel body
• BPA-free components and food-safe surfaces
• Chip-resistant Klean Coat finish for longer lifespan
• Designed to replace disposable bottles and cups

How portable is the 18 oz Classic for daily routines?

The 18 oz Classic is intentionally compact with a narrow profile so it slides into most car cup holders, commuter bags, and backpack side pockets. Its lightweight construction, slim diameter, and capped handle make it an easy grab-and-go companion for commuting, workouts, and short outings.

• 18 oz capacity for moderate daily hydration
• Narrow profile fits most cup holders and bag pockets
• Lightweight and easy to carry with the integrated cap handle
• Ideal size for commuting, exercise, and daily errands

How do I care for the bottle and cap components?

Hand-washing the Flip Seal Sport Cap and straw helps preserve the seal and finish; the stainless steel bottle itself is easy to rinse or wash by hand. Regular cleaning prevents residue buildup and keeps the spout operating smoothly.

• Hand wash cap, straw, and gasket regularly for best performance
• Bottle can be rinsed or washed with warm, soapy water
• Inspect and re-seat seals if you notice leaks
• Air dry components before reassembly to avoid moisture traps

Who is this for: The Klean Kanteen 18 oz Classic with Flip Seal Sport Cap (Corsair) is tailored for people seeking a durable, low-waste bottle that’s easy to carry and sip from. It’s a good fit for commuters, gym-goers, parents packing lunches, and anyone who wants a reliable, eco-conscious alternative to disposable bottles without sacrificing convenience.