Thank you for viewing! Children's water bottles and water bottle covers are surprisingly expensive. But kids use them constantly, so they get tattered quickly... This is a helpful item for those times! ☆ Prevents the bottom of the water bottle cover from falling out, just by attaching it to the bottom of the cover ☆ Washable and reusable. Simple design that blends with any cover♪ Elastic and durable, making it economical! 【Product Specifications】 This is not the water bottle itself, but a product to attach to the water bottle cover. ・Can be used with Hydro Flask and Thermos. ・Color: Purple ・Material: Silicone ・Size: Diameter 9cm, Height 4.2cm, Thickness 2mm ※It will fit most standard sizes (0.8~1.0L), but please be sure to check the size. ※Using double-sided tape for attachment will increase the strength. (Not included) ※If it doesn't fit, you may be able to use it by adding thickness to the cover with sponge tape, etc. <Product Condition> New and unused. There may be small scratches or stains. ※The product has been opened once to check it. ※Please note that the color in the image may differ from the actual product depending on your browser and settings. ※Please refrain from price negotiations.