MLB jersey sizing

product description: Lightweight, Classic fit, Double-needle sleeve and bottom hem[Durable and Breathable Fabric] Double Needle Hemmed Stitches for DurabilityPerformance fabric to keep you cool and dry on and off the fieldCOMFORTABLE FIT: These sleepwear Pajama Loungewear Pants are made from 60% cotton and 40% polyester and feel super soft and comfortable on the skin. Your go-to Pajama Pants for sleeping or doing nothing around the house.