Silicone Water Bottle Boot Anti-Slip Protective Sleeve Heat Insulation Protective Bottom Base for Stanley 20-40oz Water Bottle. Features: Scratch Protection, Non-Slip Base, Quality Silicone, Easy to Clean, Eco-Friendly Safety. Specification: Origin Mainland China, Main Material Silicone, Color White Gold Pink Black Blue Brown Green, Size Approximately 7.5cm 2.95in*7.5cm 2.95in*4.3cm 1.69in, Net Weight Approximately 35g. Suitable For Stanley 20-30-40oz Cups, Universal 7.5cm Cup Sleeve.