Kappler Zytron 300 model no. Z3H426 chemical splash coverall. Has attached hood with Elastic face opening, front entry zipper with LongNeck Respirator-Fit Closure, Double Storm flaps with hook and loop closure, elastic wrists and attached sock booties with splash guards. Heat sealed/taped for particulates and moderate to heavy splash where skin and vapor hazards are present. Tan color, size 4X. NOS, still in plastic bag. Former US Military surplus item. 
Pictures are of one that is out of the packaging and not being sold.  For demo purposes only.