cote&ciel Rucksack Backpack The popular cote&ciel model "ISAR". According to my husband, it seems there used to be no size variations? It's equivalent to the S size now. It can only fit a PC up to 13 inches. The color is gray, and the back is mesh. Since it's a product from quite a while ago and I don't know the exact size, I'll list the size of the back side measured with a ruler. Measured from the outside. (6th photo) Red (length) Approximately 43 cm Blue (width) Approximately 31 cm There are some pills on the inside like in photos 3-4. This price reflects the used condition.