Super Stretch
Also known as "X" Stretch Neoprene. Developed for excellent stretch and memory. Hardwearing stretch nylon on the outside with softer super stretch nylon on the inside provides excellent comfort and fit.  

Backflap
Also called Bat flap is a thin piece of neoprene that spans the shoulders and stops any water that gets through the zip from entering the suit. One of the best innovations of the last decade1