THERMOS water bottle cover with adjustable shoulder strap. The THERMOS water bottle size used was JNL 400ml. It is believed that JNR water bottles will also fit. The strap is removable. There is also a handle on the top. Photo 6 shows a mark where a name sticker was removed. The bottom is clean. The inside also appears to be free of stains to the untrained eye. It was used about 4 times. It was purchased about 5 years ago. Thank you for looking.