This item uses a thermal insulation material, so it can be used in the summer for ice ring pouches, snack pouches, onigiri pouches, pouch drink pouches, and more. The outer fabric is made of regular fabric. I wash it in the washing machine, but if you are concerned, I recommend hand washing. Fusible interfacing for pouches is used on the front side. Size: Approximately 21cm x 21cm. A 20cm YKK zipper is used. The zipper color is natural (off-white). The D-ring is silver. If you have any questions about the zipper color, D-ring color, etc., please comment before purchasing. Ice rings (two) will fit inside. (The ice rings used for the photo are not included in the product.) This is a handmade item by an amateur. There may be some distortions or double stitching due to the sewing machine. I make each one carefully, but I appreciate your understanding of handmade products. Due to the rise in material costs, I will slightly increase the price. I do not offer discounts on individual handmade items.