Bloomingdale's takes 25% off select Calvin Klein Underwear. Better yet, the friends and family code BLMFRIEND (exp. 10/4) stacks on top of the promotion for additional savings. The Men's Body Hip Briefs drop from $16 to $12 and now $9.60, the Men's Combed Flat Knit Sock Three Pack lowers from $20 to $12, and the Prostretch Trunk (pictured), reduces from $24 to $14.40. Shipping is from $10 or free over $300 (Bloomingdale's card holders get free shipping with $150). Sales tax is charged in states with Bloomingdale's retail locations.