【Functionality】 This water bottle cover is made of durable polyester material, perfect for everyday use. It's lightweight and easy to carry, making it suitable for outdoor activities and travel. 【Design】 Featuring a vibrant blue color, the stylish design is eye-catching. It comes with a shoulder strap for easy carrying. 【Protection】 The inside is padded with cushioning material, providing excellent protection for your water bottle. It protects against impacts, allowing you to carry it with peace of mind. - Color: Blue - Material: Polyester - Inner Material: Polyester - Cushioning Material: Expanded Polyethylene The bottom diameter is approximately 6.2cm, designed specifically for slim bottles up to 500ml. Please note that standard-sized plastic bottles will not fit. I purchased this by mistake. There are no tags or packaging. New, almost unused. Please understand and purchase accordingly. In addition, when shipping, I will slightly compress it to make it compact.