The Sportubes Series 1 Single Sportube Hard Case is made of a high density polyethylene plastic protects ONE pair of Alpine, shaped or powder skis & poles, or TWO pairs of Nordic skis and poles. It is designed to be lightweight while being strong and durable. Wheels make your sports gear easy to handle -- just pull it along with you like a suitcase! Wire Case Pin & shoulder strap included. Sportube can be locked for added security for shipping or non-airline related travel.