Chemise MLB

Washing on hot water can fade the color or damage decals on jerseys without stitched-on lettering, and putting a jersey in the dryer can cause shrinkage, color fading, or other damage — cold wash and air dry are the safest bet.

No — authentic jerseys are made of a more durable double-knit material with sewn-on lettering and patches, while replica jerseys use lighter, less durable fabric with letters and patches that are ironed or silk-screened on rather than sewn.

Authentic/on-field style jerseys run tight and athletic through the shoulders and chest, so many fans size up one from their usual t-shirt size; replica jerseys have a looser, more standard fit closer to a regular tee.