1 VERY RARE Duofold DU-ONS Mens Athletic Union Suit. Tricot of Celanese Acetate Material. Collectors and Enthusiasts These are EXTREMELY RARE Silky smooth coverage and support of your torso and groin.... On and off in a jiffy!The item "Vtg DU-ONS Mens Athletic Union Suit one piece underwear sheer NYLON 40" is in sale since Saturday, August 31, 2019. This item is in the category "Clothing, Shoes & Accessories\Men's Clothing\Underwear". The seller is "worldeco4u" and is located in Rexburg, Idaho. This item can be shipped worldwide.