Longhorns NCAA Dog Sweater Officially Licensed Longhorns NCAA Dog Sweater - Large XS Sweater Sizing - Length (6-9"), Girth (8-12"), Neck (6-8") Small Sweater Sizing - Length (8-12"), Girth (13-18"), Neck (10-14") Medium Sweater Sizing - Length (14-18"), Girth (19-24"), Neck (14-18") Large Sweater Sizing - Length (20-24"), Girth (25-28"), Neck (18-20")