Used once and hand-washed. I'm selling it because I don't plan to use it anymore. The strap is adjustable, and it has an inner pocket and side pockets. The back pocket can be opened and attached to a carry-on bag ^^ It weighs about 190g and is approximately 20cm x 19cm in size. I will fold it up small for shipping, so please be aware of fold creases. Also, I have used it once, so please refrain from purchasing if you are sensitive to such things m(_ _)m