PetPoms are hand strung to size and constructed with either two (for mini and micropoms) or four (for standard and megapoms) durable extra thick 1 mm strands of the best stretchy cord available. Our pompoms are durable yet still easily stretch over your pets head for easy dressing and removal. They are available in the following sizes:SMALL/SMALL MINIPOMS - $13/$15 - circumference up to 10.5-1 inches/generally for necks up to 9.5 inchesMEDIUM/MEDIUM MINIPOMS - $15/$17 - circumference approximately 14-15 inches/ generally for necks up to 13-13.