Z Supply Flutter Thermal Short 

Another Silky Thermal must-have, our Flutter Thermal Short is relaxed and made from the softest thermal you've ever felt. A faux button fly and relaxed leg openings give this short an updated look. Pair it with the Hang Out Thermal Tank for a matching set that will take you from the bed to the couch.

Fabrication: Silky Thermal: 95% Polyester 5% Spandex