Check the listing for details. Silicone Boot Bottom Sleeve Protector Brown. Color: Brown, Condition: New. Listed at 12.13 USD. Protective boots are specifically designed for most water bottle brands and models or other car travel tumblers. Designed to provide a protective layer, this silicone boot helps your tumbler bottom against scratches, and minor impacts, extending its lifespan.Specification:Color: BrownMaterial: SiliconeHeight: 4.5 cm / 1.77 inchDiameter: 7.5 cm / 2.95 inchThickness: 2 mm / 0.08 inchPacking List: 1 Pcs x Silicone BootsAdvantage: Bottom boot is made of soft and flexible silicone, anti-slip and anti-fall, reusable and washable.Instruction: Bottom sleeve protector is suitable for various settings, such as the car, office, gym or at home, providing versatile and long-lasting protection for the bottles, reducing noise and preventing scratches and damage.