This is a chalk bag from CXM (See by M). This product is no longer in production. In terms of size, it's a vertical type that can fit both hands. You can store it by wrapping it around from the top and tying it with a string. The white fabric makes chalk stains less noticeable. I used it for about a month, washed it, and then stored it. It's a semi-custom item, a one-of-a-kind product. Height: 25cm Width: 20cm Measurements are approximate.