Product Details Method: Protective cover for backpacks. Size: Width: 10.6 inches (27 cm), Height: 20.5 inches (52 cm). It is compatible with most of the backpack on the market, but if the size does not fit after purchasing, we will respond to returns (we ask for the shipping fee). Material: PVC; Note: This product is made of vinyl so it repels rain and dirt, but it is not meant to protect the entire backpack like a rain cover. ◆ Please note that strong impact may cause scratches and damage. If you place it near an open fire or a hot item, the vinyl may melt or cause fire. ◆ High transparency and soft vinyl, but it is prone to hardening when the temperature drops, so children may get injured due to poor weather. Please be careful during winter. ◆ There may be cases where it cannot be used depending on the type of backpack. ◆We ship it in a folded state, so there may be creases. The wrinkles will be inconspicuous when ironed at low temperatures.