Thank you for viewing! This is a handmade water bottle cover. Perfect for 500-600ml water bottles. It doesn't take up much space in your bag, and the top is left uncovered so you can easily remove the cap and drink directly from it. I've kept it simple. A D-ring is attached in one place, so you can add your favorite charm! ★ The charm in the image is not included. Outer fabric: Polyester, Cotton Lining: 4-layer construction, specially processed cooling/heating sheet Washable: Hand wash or use a laundry net is recommended. This is handmade. I make each one with care, but there may be slight variations or imperfections. If you are concerned about the details, please refrain from purchasing. Thank you for your consideration.