Nylon outer with reflective piping, waterproof with leash hole.
These are not sized for greyhounds
Sizes are as follows:
Size 20 - Length is 20", Girth 24'-30"
Size 18 - Length is 18", Girth 23"-28"
Size 16 - Length is 16", Girth 22"-26"
Size 14 - Length is 14", Girth 20"-24"
Size 12 - Length is 12", Girth 18"-22"
Size 10 - Length is 10", Girth 16"-20"