Old Navy boys briefs and boys undershirts will provide your "little man" with comfort underneath his clothes. Shop for fun prints or classic white in boys briefs. You'll discover 100% cotton boys briefs with tag-free, elastic waistbands for comfort & support. Our boys undershirts come in tanks or crew neck in super soft fabric that is also tag-free to eliminate itching or scratching, no more cutting tags or listening to complaining. Essential boys briefs and boys undershirts from Old Navy are sold in convenient 2 or 3 packs, order some today.