This is a semi-ordered dry suit with a thickness of 0.1 inches (3.5 mm). You can change the wrist circumference, neck circumference and foot length (boot size) It also comes with a foot valve, so you can avoid the air accumulated on your legs and causing it to stand upside down. Please note that we cannot accept returns or exchanges after purchasing dry suits. If you have changes to the neck, wrist and foot length, please fill in the notes when purchasing.