Made of 100% silicone, it's durable, long-lasting, and heat-resistant! It firmly protects the bottom of your water bottle, which is most prone to scratches! #rere_waterbottle Color: Gray Gray, set of 2 Size: 65mm Height: 18mm Thickness: 2mm Fits water bottles with a bottom diameter of 6.5cm! Please check the size of your water bottle's bottom before purchasing! This is an overseas product. Please refrain from purchasing if you are looking for perfection or are overly sensitive to imperfections. The product has been inspected, but there may be oversights! There may be small burrs, shape distortions, or slight color fading. Therefore, please refrain from purchasing if you are sensitive to these issues. Zojirushi, Tiger, T-fal, Thermos Entrance to school, preparation for school, kindergarten, nursery school, girls, boys Cooling, insulation, children, my bottle, Starbucks Skater, ultra-lightweight, stainless steel bottle, 4 Plastic water bottle, direct bottle, Cars