The original capCAP is one of the most popular water bottle accessories of all time, and its unique 2-in-1 design has fans all over the world. For the 2.0 version, Humangear went back to the drawing board and included some great new features, including a rubberized grips on both caps and a "Cap Keeper" notch on the strap that holds the small cap out of the way when drinking. They have also redesigned the cap-bottle interface so that the capCAP is now compatible with popular stainless steel water bottles from Hydro Flask, Klean Kanteen, and others.
The capCAP+ is 100% BPA-free, polycarbonate-free, and phthalate-free, and made with FDA-approved, food-safe polypropylene (#5) plastic. Both small and large cap gaskets are made from food-safe silicone.