Dear Aoi, Thank you for waiting. m(_ _)m ※※Please check the size※※ Approximately 22cm x 17cm Mini Ice Non Cover Pillowcase, Cooling Pack Cover Heatstroke Prevention ■Colors: Gray Paw Prints Moon Star Light Blue ■Outer Fabric: 100% Cotton, Quilted Nubi ■Inner: Aluminum Heat Retention/Cooling Sheet (The color of the aluminum sheet may vary.) Mesh: 100% Polyester Aluminum Sheet: Aluminum Non-woven Fabric: 70% Polyester / 20% Nylon / 10% Rayon Polyester Cotton: 100% Polyester ■Size (approx.): 22cm x 17cm ■Care Instructions: Washable (gentle cycle) ・Hand washing is recommended. ・Heat resistance is -20°C to 80°C. ・Do not tumble dry. This ice non cover was a great help in our house last year *ˊᵕˋ* Keeps cool for a long time! For small dogs and children! Since it uses an aluminum heat retention/cooling sheet on the inside, you can use it with ice packs or cooling packs on hot days, and as a hot water bottle cover on cold days. Can also be used in dog beds and crates. Please be careful of accidental ingestion! There are no bulk discounts for the mini ice non cover. Thank you for your understanding. m(_ _)m As this is handmade, please understand that there may be some slight imperfections.