I think that description was an error. Here's another all legal:
5MM NEOPRENE ON LEGS - improves flotation and balance in the water.
NEOPRENE THICKNESS - Collar: 3mm, Shoulder: 3mm, Body: 5mm, Legs: 5mm, and Calf: 5mm. http://www.onetri.com/Profile-Design-by-Aquaman-Mens-Bionik-2-Triat...