Custom on-field style jersey. Everything is sewn on, size Adult XL. Hand-signed by Sammy Sosa.The lot / autograph(s) includes an official Beckett Authentication Services serially numbered hologram for authenticity purposes.Authentication: Beckett HologramSamuel Kelvin Peralta Sosa (born November 12, 1968) is a Dominican American former professional baseball right fielder. Starting his career with the Texas Rangers, Sosa became a member of the Chicago Cubs in 1992 and became one of the game's best hitters.