L-Style – Krystal One – Dart Case – Ryan Searle – V3 – Black. This Krystal One Case is lightweight and perfect for any player who likes to keep their darts fully assembled. It comes with a carabiner to attach to your belt, a wristband, and also a card holder.L-Style – Krystal One – Dart Case – Ryan Searle – V3 – Clear White. This Krystal One Case is lightweight and perfect for any player who likes to keep their darts fully assembled. It comes with a carabiner to attach to your belt, a wristband, and also a card holder.