This is a Jon Lester Boston Red Sox adult home jersey made by Majestic, the official manufacturer of all on-field MLB baseball jerseys. " Lester " and "31" are stitched on the back in tackle twill letters and numbers. The front features the Boston Red Sox logo on the chest. The jersey is made of 100% polyester. This jersey will be custom-ordered from Majestic for you and therefore cannot be returned or exchanged unless not as described. Please contact us with any questions before ordering.