This is a Margaret & Sophie PET bottle cover. It's designed for 450ml PET bottles. The lid is hidden, but 500ml hot PET bottles can also fit. Stainless steel bottles can also be used. It uses a washable aluminum sheet. The inside uses a thermal and cold-retaining mesh aluminum sheet. Approximately 19cm tall Approximately 11.5cm wide Approximately 5.5cm base There may be slight variations. There may be some imperfections in the stitching, such as unevenness or misalignment. This is a handmade item by an amateur, so it is difficult to make it as perfectly as a mass-produced product. If you are concerned about minor details or are looking for a perfect product, please purchase a mass-produced item. I make it with care ^ ^ Thank you for your understanding of handmade items. I do not have any pets. Type: PET bottle cover