Compatibility: 2.91" diameter. Our protective silicone boot is specially designed for stanley 40 oz tumbler with handle(fits H1.0 & H2.0), stanley 30 oz tumbler with handle, stanley iceflow flip straw tumbler 30&20 oz and simple modern 40 oz tumbler, they could fit snugly on your expensive tumblers and offer effective protection. They may also fit other brands or series, the most important thing to pay attention to is the diameter of your water bottle! Premium Material: Made of soft and stretchy silicone rubber, these for stanley boot sleeve are BPA-free, food grade, without odor, reusable and durable, could be daily used for stanley cup with handle in peace of mind. Extra Protection: This for Stanley cup boot can offer effective protection for the bottle bottom, to avoid dent, scratch resistant, anti slip, reduce noise. Extend the service life of your Stanley tumbler with handle. NWT Smoke and pet free home Bundle for better deals, bundle 3 items for free shipping