Andrew Scott Mens 2 Piece & 6 Piece Base Layer Long Sleeve + Long Pant Thermal Underwear Set (1 & 3 Pack Mix Match Options) Machine wash / Tumble dry PREMIUM COMBED 100% COTTON THERMAL UNDERWEAR MIX & MATCH SETS ;100% Combed Cotton With Soft Fleece Brushed Underside Cotton Lining SOFT WINTER WEIGHT NATURAL COTTON ; Perfect Weight Underwear Base Layering or Sleep Wear Set for those Cool/Cold Night EXTREME COMFORT FIT ; Flat Thermal Flat Knit Fabric Long Sleeve Crew with Stay Flat Collar & Spandex Rib Wrist Openings + Long John Thermal Pants with Spandex Rib Stay in Place Ankle Openings AVAILABLE IN 1 SET OR IN 3 PACK SET = 6 PIECE COMBINATIONS ; Mix & Match Great Core Colors & Prints EASY CAR ; Machine Wash Cold / Lay Flat or Tumble Dry / Brilliant Colors & Soft -Wash After Wash