• Croakies has taken their classic Terra Cords and added the Plug n' Play Re-attachable End technology of the ARC System to create the Terra System
• Regular Terra ends fit 3-5 mm temples, XL Terra Ends fit 6-9 mm temples and XXL Terra Ends fit 9-15 mm temples
• 12" long (on each side) and 3.2 mm diameter, with an adjustable black bead; colorfast and washable

This sport retainer comes with two pair of re-attachable end options, and an adjustable cord.