For sale: REI Midweight Polartec Power Dry long johns, men's small size, black. They measure 11" across the waist relaxed and 19" stretched tight with a 30" inseam and weighing 6.2oz on my scale. This is lighter stuff than the deeply gridded Power Dry found in garments like the Patagonia R1 series. You can see the grid in the photo with the labels. It is warmer than silk weight, but breathes and transfers moisture well. Perfect under rain pants in cold wet weather and general use as the mercury drops or wear them with your shorts like tights. In excellent condition showing only light wear, $15 including US shipping and PayPal fees.