Petsetgo Heat Transfer Harness features soft, fray resistant nylon. Provides more comfortable fit and less pressure around neck than classic collars for easier training and outdoor activities. Plastic side buckle on the chest strap that quickly clicks shut and stays put. Designed with adjustable tri-glides chest straps for fast adjustment and customs fits for different girth sizes. Heavy-duty stitching for lasting quality and two metal D-Rings for secure lead.