Rear Entry AquaSeal® Gas-Tight Zipper, Double Storm Flaps with FR Hook & Loop Closure, Expanded View AntiFog Visor System with Additional FEP Overlay, Expanded Back, Field Replaceable 2N1® Glove System and Removable Nomex Overgloves, Attached Sock Booties with Splash Guards, Knee Reinforcements, 2 Exhaust Valves.