Klean Kanteen TKWide Insulated with Wide Loop Cap
Silicone is only a gasket/seal — what touches your food is Stainless Steel (304 / 18-8) and Stainless Steel (grade unspecified). And it sits in a hot path, where silicone matters more.
The insulated TKWide bottle fitted with Klean Kanteen's Wide Loop Cap, whose one-piece stainless interior keeps the drink on steel - a leakproof, steel-and-silicone path and the current stand-in for the discontinued TKPro thermos.
The verdict: Silicone only
The TKWide Insulated body is 18/8 stainless steel, and Klean Kanteen's Wide Loop Cap has a one-piece vacuum-insulated stainless interior, so the surface your drink meets is all steel - the brand states the beverage never touches plastic. The cap seals with a food-grade silicone double gasket, and its outer housing is polypropylene that sits outside the drink path, so the water path is steel plus silicone: silicone-only. This is NOT how the bottle ships - the insulated TKWide comes with a plastic cap, and you buy the steel-interior Wide Loop Cap separately. It is the closest current equivalent to the discontinued TKPro thermos, though you drink by unscrewing the wide mouth rather than pouring into a steel cup.
Verification: Manufacturer confirmed · Last reviewed
The insulated TKWide ships with a polypropylene cap; this steel-interior Wide Loop Cap (a separate SKU) is what puts the drink path in steel plus silicone. Buy it separately.
What it's made of
| Part | Material | Food contact |
|---|---|---|
| bottle body (double-wall vacuum insulated) 18/8 (304) food-grade stainless with a smooth steel drinking lip; Klean Coat exterior | Stainless Steel 304 / 18-8 | Yes primary 🔥 |
| stock cap (shipped, replaced by the Wide Loop Cap) ships with — replace the insulated TKWide ships with a polypropylene cap; you replace it with the Wide Loop Cap | Polypropylene PP, #5 | primary |
| Wide Loop Cap interior (add-on) one-piece vacuum-insulated stainless interior; the drink-facing surface, which the brand states keeps the beverage off plastic, but specific grade is unstated | Stainless Steel grade unspecified | Yes primary 🔥 |
| Wide Loop Cap gasket food-grade silicone double gasket - the only non-metal part in the drink path | Silicone | Yes seal 🔥 |
| Wide Loop Cap outer housing PP#5 outer shell of the cap - structural/exterior, sits outside the drink path | Polypropylene PP, #5 | No |
| Wide Loop Cap swivel loop steel carry loop on the cap, exterior; grade unspecified | Stainless Steel grade unspecified | No |
Klean Kanteen's insulated TKWide bottle, set up the plastic-free way with the Insulated Wide Loop Cap. It's a vacuum-insulated leakproof bottle with a wide mouth and a steel swivel carry loop on the cap; the cap disassembles for cleaning. You drink by unscrewing the wide mouth - there's no sip spout or straw. With the TKPro thermos now discontinued, this body-plus-cap combination is the current in-production Klean Kanteen for a leakproof, insulated, steel-and-silicone drink path.
Pros
- Steel drink surface plus a single silicone gasket - no plastic in the drink path
- Leakproof and vacuum-insulated
- Current, in-production alternative to the discontinued TKPro thermos
- Steel swivel loop for carry; the cap disassembles for cleaning
Cons
- Does not ship this way - the Wide Loop Cap is a separate purchase from the stock plastic cap
- Open wide-mouth drinking only - no sip spout or straw
- Costs more than a basic mug once you add the cap; heavier than a slim tumbler
Notes
- Fits TKWide insulated bottles with internal threads; it is a different cap from the polypropylene-spout Café Cap
Categories: Travel Mugs & Tumblers
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://www.kleankanteen.com/products/tkwide-insulated-wide-loop-cap Insulated Wide Loop Cap has a full stainless steel interior so the beverage never touches plastic; construction is PP#5, food-grade silicone (double gasket), and stainless steel; leakproof; fits TKWide insulated bottles with internal threads
- retailer https://earthhero.com/products/tkwide-loop-cap retailer listing confirms full stainless steel interior with double silicone gasket, polypropylene outer body, and stainless loop handle; drink contacts only stainless steel and silicone
- manufacturer https://www.kleankanteen.com/collections/insulated-tkwide TKWide insulated bodies are food-grade 18/8 stainless steel with a smooth rounded drinking lip
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