Back zipper, mock neck, crotch zipper.  Size Medium - it will fit a medium (someone with a chest of 38 inches - 40 inches or larger) and waist of 30-34 inches.  It fits more like a Large in my opinion. 

These suits are $180 brand new with $20 shipping.  So I am selling with a big discount.  Great suit overall and great smooth shiny fabric.   

*Mask pictured in model image not included.