Here's what other sites are saying:
All styles of Klean Kanteen Caps are available and they include the Poly Sport 2.0, Poly Loop, Poly Flat, Stainless Loop and Stainless Flat caps that work with all sizes of the Classic Klean Kanteen. All caps and lids are interchangable with all sizes of Klean Kanteens. Stainless steel loop and flat caps are available for those who prefer that only stainless come in contact with their beverage. Customize your Klean Kanteen collection to your liking or simply replace a lost top. All Klean Kanteen caps are made from polypropylene, a safe plastic that's free of BPA, phthalates and other toxins. The revolutionary Sport Cap 2.0 effortlessly delivers a high flow rate that makes it easy to drink from your bottle without removing the cap. The Loop Cap is totally leakproof and has a durable attachment point so you can clip it on to just about anything. Flat Cap is low-profile, unobtrusive and leakproof
- Tahoe Mountain Sports
Designed to give you a low-profile, lightweight option that doesn't take up much room, the Flat Cap is the choice for itty-bitty purses, jam packed bags, or those times when you want a smooth, simple look.
Designed to give you a low-profile option that doesn't take up much room, the Flat Cap is the lightest weight cap for your Klean Canteen. It's the choice for itty bitty purses, jam packed bags or those times when you want a smooth, simple look. Of course it's also made from polypropylene (pp#5), so it's free of BPA and other toxins. Fits all Kanteen(R) Classic bottles. No BPA, phthalates, lead or other toxins. Cap is leakproof, and should be handwashed.
- Rocky Mountain Trail
Kleen Kanteen Stainless Flat Cap - The perfect companion for your Klean Kanteen reusable drink container, the Stainless Flat Cap fits the 12, 18, 27, and 40 ounce stainless steel bottles securely. The Flat Cap twists on and off and properly closed, the cap will not to spill, even if you throw the bottle in the bottom of your backpack. Durable, sanitary, and non-reactive stainless steel is the material of choice among the food processing, dairy and brewery industries. The sanitary grade 304 stainless steel used in this cap also has a low nickel content, further reducing exposure to potentially irritating substances.
- Massey's Outfitters
The Klean Kanteen Flat Cap for those that prefer a simple, uncomplicated cap. Designed to give you a low-profile option that doesn’t take up much room, the Flat Cap is also our lightest weight cap. It’s the choice for itty bitty purses, jam packed bags or those times when you want a smooth, simple look. Of course it’s also made from polypropylene (pp#5), so it’s free of BPA and other toxins.