Thank you for viewing! This is an insulated and cooled lunch bag with handles. It has a pocket inside for ice packs. It uses a 4-layer aluminum insulation and cooling sheet, so you can use it all year round (^^) (4-layer structure: polyester cotton, non-woven fabric, aluminum sheet, mesh lining) Opening width: 27cm Bottom width: 17cm Height: 17cm Drawstring part: 11cm Gusset: 10cm Please put it in a net for washing. Please avoid using a tumble dryer. This is a handmade product. Thank you for your understanding and purchase. #nanami lunch bag