Let your pooch show their team spirit with this collegiate sleeveless polar fleece sweatshirt.Sizing Chart: Tiny: 2-5lbs. XX-Small: 4-9lbs. X-Small: 8-14lbs. Small: 12-20lbs. Medium: 18-30lbs. Large 28-42lbs. X-Large: 40-60lbs. XX-Large: 58-80lbs.