【Special Customization】This heightened & thickened cup boot sleeve is designed for Stanley Quencher H2.0 FlowState Tumbler 40oz and Stanley Adventure Quencher Tumbler 40oz. The exterior of the cup sleeve is honeycomb shaped to increase friction, making it easy to grip and not easy to fall off or slide around. 【Soft Silicone Material】Made of high quality food grade BPA-FREE silicone material, soft and durable, no smell, good elasticity, no deformation. 【Comprehensive Protection】This tall rubber cup boot is heightened design, can better protect your cup from harm. Anti-slip, anti-noise, anti-scratch, anti-dents and prevent collision. Maximize the protection of your Stanley bottle. 【Perfect fit Snugly】Designed to fit snugly around your Stanley cup, this long cup boot sleeve is easy to install and remove. Make your water bottle stand out from the crowd with this silicone cup bottom protector sleeve! 【Premium Service】We have a variety of colors for your choose. If you have any questions during the use, please feel free to contact us, we will provide you with the most satisfactory service. Tall Silicone Protector Sleeve Accessories for Stanley Quencher H2.0 FlowState Tumbler 40oz and Stanley Adventure Quencher Tumbler 40oz.