Owala Bottle Boot - 24 oz | Black Color | Perfect Match 4 Any Owala Tumbler! -24 oz size -black color -would make a perfect match for any of your Owalas where black coordinates with your colors or you want one that keeps the base clean. -the Owala brand boots are extremely high quality and a bit taller & thicker than the "normal" boots you normally buy from most sources. -saves the bottom of your tumbler from scratches and dents from setting them down on scratchy surfaces or taking a hard fall -if you are planning placing this on the bottom of any of your 24 oz tumblers, it is perfect bc it saves the base of the bottle if you have a young one who will be using it or even an older one (heck, I can dent my tumbler if I really try)!! I cannot recommend it enough.