The Swap and How They Make It (1966)

Watch The Swap and How They Make It: In a snowy upstate New York village, two unhappily married women bide their time with each other's company. The husbands of beautiful blonde Mona (Lorraine Claire) and big-haired brunette Karen are busy developing their own company, with their love lives suffering in the process. Mona's next-door neighbor Brooke suggests them join the area's most happening club, "The Exchange." Rather than the usual men-swapping-wives routine, this time round it's the horny wives who switch husbands for a night of sexy fun.