Thank you for looking! This is a handmade drawstring type knapsack. Both the front and back are made of water-repellent fabric. It is made with two layers, so it is sturdy. The lining is moss green. The water-repellent effect will gradually fade with washing and friction. To make it last longer, avoid excessive washing, and if there are light stains, wipe them with a damp towel and air dry. If the effect fades, please use a commercially available waterproofing spray. It would also be suitable as a pool bag, a change of clothes bag, or a gym clothes bag. *Size - Height 45cm x Width 35cm - String 180cm [Notes] - There may be slight errors in size. - It will be shipped folded, so there will be creases. - We recommend washing in a net or hand washing. - Each item is carefully made with a professional sewing machine, but please understand that as a hobbyist, there may be some wrinkles, distortions, or re-sewn areas. We ask for your understanding before purchasing. Type: Gym clothes bag/Change of clothes bag