The Vintage Sears Roebuck and Company Boys Size 18 Thermal Underwear Shirt is a rare and unique piece from the 70s/80s featuring long sleeves and made from cotton material. This original, white shirt in boys size 18 showcases the classic boho look and is a perfect addition to any casual occasion. Made in the United States by Sears, Roebuck and Co., this shirt is a timeless wardrobe essential for any vintage-loving individual.