Small - 2.5mm internal diameter (Green 6-8 Carp Bungee or 10-14 solid elastic)

Medium - 3mm internal diameter (Yellow 10-12 Carp Bungee or 12-16 solid elastic)

Large - 3.5mm internal diameter (Pink 14-16 Carp Bungee or 14-20 solid elastic)

Extra Large - 4mm internal diameter (Red 18-20 Carp Bungee or 20+ solid elastic)