Medley&reg; Swim Beads Starter Set Set contains: 1 elastic cord, 10 lap and spacer Medley Beads, 10 assorted stroke and freestyle Wraps, laminated loop fabric (to store extra wraps), and a mesh bag to keep it all in. Durable elastic rope spans swimming pool lane widths ranging from 6 ft - 8.2 feet. The beads are made of foam; they are buoyant with low water absorption, mildew and chemical resistant. Medley Wraps are the highest quality hook and loop straps; store unused Wraps on the 12"x18" piece of laminated loop fabric The 12x15" bag is made of breathable, mildew resistant mesh for quick drying, just cinch it with the cord lock. Additional Medley Beads (for more laps!) and Wraps are available by contacting imswimming@live.com