Longsleeve compression jersey made in the USA.  It is a nylon/lycra blend and is available in the following colors:

White, Vegas, Royal, Red, Purple, Navy, Maroon, Kelly, Gray, Gold, Forest, Brown, Black

Great to wear under your jerseys to keep your throwing arm warm, these jerseys are well worth it.

There are different weights for these jerseys so make sure you discuss your options and get the one best suited for your team's needs.