Cheerleader Dress up Halloween Costume Outfit for Dog- LARGE Velcro Closure on underside of neck and belly for slightly adjustable fit. 100% Polyester Size is LARGE. ACTUAL MEASUREMENTS (laid flat): Back Length: 16", Neck Girth: 14", Chest Girth: 22". For length measure from base of neck to base of tail. For neck & chest measurements be sure to measure width around widest points of neck & belly.