The Shamrock hoodie is an optional purchase item -- $44 each
The 2015 adidas Shamrock Run hooded sweatshirt is forest green and will be available in men’s sizes only -- Youth L through Adult XL (but not Youth XL). The light-weight (8-ounce) garment is constructed from a polyester performance fabric and runs nearly a full size larger than a traditional fleece hoodie, even after washing and drying. Order accordingly.
If you normally wear a Men's large, you should order a Men's medium. If you normally wear a Men's small, you should order a Youth L.