Calvin Klein Underwear Men's Size Chart Power through the day in the Intense Power Cotton Trunks. Low-rise trunk fabricated from a soft, lightweight cotton-stretch blend. Added stretch offers enhanced mobility. Body-defining fit. Branded elastic waistband. Seamed contour pouch provides lift and support. No-fly design. Seamless back. 94% cotton, 6% elastane. Machine wash cold, tumble dry low. Imported. If you're not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included.