"Aiden" Black Tuxedo Jacket (Separates)

What does "Separates" mean?A separates program allows you to purchase any size jacket with any size pants.  This particular product is for the jacket only.  If you need both jacket and pants, please be sure to add the matching pants to your order. Color: Black Jacket Lapels: Notch Buttons: 1 Material: Polyester Pattern: Solid Jacket Vents:  No Vents Fit & Sizes: Classic Fit (34 - 64) & Slim Fit (34 -48) Condition: Brand new with original tags & packaging MATCHING PANTS:  The pants that were designed to go with this Aiden Jacket are the "Daniel" Black Tuxedo Pants ($59.95).