As far as i know, the kydex sheat is discontinued. There is a zytel sheat instead, which is cheaper, more durable, and more slim. I like it. The other one i like is the open top sheat, which is low dangling, so it's not in the way of the backpacks waist belt, and when you sit down. I have the open top leather, but it shows it's wear now, so i will get a zytel one soon. Not as nice as the leather, but it's a user knife, have to be practical first.