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 uses regular fabric. I wash it in the washing machine, but I recommend hand washing if you are concerned. 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. 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. (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 raise the price slightly. We do not offer discounts on individual handmade items.