This sturdy black plastic storage tube from Staedtler is ideal for protecting and transporting of documents, artwork, prints and posters. It features a replaceable identification pad (not recommended as a mailing label) which enables you to record the tubes contents under a clear plastic cover. The tube expands from 26" to approximately 44" in 24 locking 3/4" increments. The tube measures 4-1/4" in diameter, and includes an adjustable shoulder strap with a 52" maximum extension.