Black, composite tube with screw cap on each end. Holds up to two bows. It is designed for use with one or two Bam Bow Sleeves (not included), which cushion the bows and prevent them from shifting within the tube. The tube can not be used without a sleeve for each bow. Tube holds one violin, viola, or cello bow comfortably. Tube will hold two bows, but the fit is quite tight.