Klean Kanteen Classic 27oz 800ml - 27 Fluid Ounces

Klean Kanteen Classic 27oz 800ml is a single-wall stainless steel bottle with a 27-fluid-ounce capacity, a Flip Seal Sport Cap, and a removable stainless steel straw. The bottle weighs 8.4 ounces and measures 10.75 inches high by 3.41 inches wide.Manufacturer specifications

Lightweight Single-Wall Design

The bottle holds 27 fluid ounces, or 800 ml, in a narrow format designed for cup holders. Its 1.75-inch opening supports filling and cleaning, while the non-insulated construction keeps the bottle lighter than a vacuum-insulated alternative.

Klean Kanteen lists certified 90% post-consumer recycled 18/8 stainless steel for the bottle. The Klean Coat finish is chip-resistant, and the bottle is BPA-free and lead-free.REI technical specifications

Flip Seal Cap And Straw

The Flip Seal Sport Cap is listed as 100% leakproof and includes a removable stainless steel straw. The spout opens and closes with a thumb-operated flip mechanism, allowing drinking without tilting the bottle.

The cap design separates this model from a basic loop-cap bottle, but the single-wall construction does not provide vacuum insulation. Klean Kanteen also states that the bottle is dishwasher safe and suitable for cold beverages.

US Price And Category Position

REI lists the Klean Kanteen Single-Wall Classic Water Bottle with Flip Seal Sport Cap at $21.95 as of 09/22/2026.US retail price The manufacturer's US store lists the 27oz Classic with Flip Seal Sport Cap at $21.95, while the Santa Cruz finish is listed at $24.95.Classic collection pricing

Compared with an insulated bottle in the same capacity class, this model trades temperature retention for lower listed weight and a slimmer body. Its 8.4-ounce weight and 27-fluid-ounce capacity suit users who want a reusable bottle for commuting, hiking, cycling, or gym use.

Best Fit For Cold Drinks

Klean Kanteen Classic 27oz 800ml is best placed as a lightweight, non-insulated reusable water bottle. The leakproof sport cap, removable straw, dishwasher-safe construction, and recycled stainless steel address daily handling, while the absence of insulation limits its role for users who need long-lasting hot or cold temperatures.