Size 2XL. Based on the image, you have a black Ohio State Buckeyes pullover jacket, featuring the iconic "Block O" team logo embroidered on the chest.
While several similar items exist from different brands, your specific item matches the style of vintage and modern windbreakers or performance pullovers:
Similar Pullovers & Jackets
Performance T-Shirts & Pullovers: Columbia offers several similar styles, such as the PHG Terminal Shot 3-Hit Long Sleeve T-Shirt (approx. $54.99) and the Omni-Shade Terminal Tackle T-Shirt.
Windbreakers: For a heavier outer layer, 2Bhip has a Lightweight V-Neck Windbreaker that closely resembles the garment's texture and logo placement.Local pickup and cash only.