L-Style Custom One Jacket Set For CUSTOM ONE Crystal One Only "LUCHA LIBRE" and "BLACK BOARD" - 1 each Although new and unopened, some packages may have stains or yellowing. Please understand this before purchasing. The following is an excerpt: Accessories exclusively for L-STYLE's Crystal One. These accessories customize the dart case "KRYSTAL ONE" released by L-STYLE. This is a full set including ONE-Headband, ONE-Jacket, and One-underwear. ONE-Headband: A band to hold flights. Prevents the dart set from falling out. Can also be used as a wristband. ONE-Jacket: A band to protect the body. One-Underwear: Prevents the ONE-Jacket from falling off. Also functions as a card holder.