Kong On The Go ADJUSTABLE HARNESS (Extra Small, Green) Kong is the manufacturer of the best dog collars, harnesses & leashes. Made of long-lasting, durable paracord. Easy to adjustable and put on the dog with a buckle system and 4-points of adjustment. Best harness for extra small dogs, sized at chest girth from 12 to 18 inches. (30.4 cm - 45.7 cm) Lime Green with reflective stripes around 80% of the collar surface