Why do they make them with suspenders also? I've only seen this with spearfishing suits.
I think there's a general misconception that without suspenders the pants tend to slide down, and the wetsuit manufacturers cater to the divers that expect suspenders. Also the suspenders appear to add value to the wetsuit. I never had the waist high pants slide down with Speardiver wetsuits, anyways the jacket has a beaver tail supporting the pants. It's simply more comfortable without the suspenders.