The Klean Kanteen TKWide Straw Cap is supplied with both a stainless steel and silicone straw that will fit any Klean Kanteen TKWide bottles.
The included steel straw is a wide 10mm, perfect for smoothies and comes with cut-to-fit silicone extender allowing it to fit any size of the TKWide bottles. The silicone straw tip is safe, comfortable and all pieces are dishwasher safe. The straw enters the cap through a cross-cut silicone membrane.
The cap is backed by the lifetime Strong as Steel guarantee for a lifetime of use from your Klean Kanteen solutions. Compatible with TKWide Klean Kanteen bottles only.
We've tested it, and confirm that while the cap is fairly leak-resistant, it is not leakproof. Keep your flask upright.