ColdPruf Men's Size Chart
  Small Medium Large X-Large 2X-Large 3X-Large
Tops/Chest (in) 34-36" 38-40" 42-44" 46-48" 50-52" 54-56"
Pants/Waist (in) 28-30" 32-34" 36-38" 40-42" 44-46" 48-50"

These are general guidelines only, sizes are not guaranteed. But no worries, since at SunnySports we offer our exclusive PFF Guaranty