Ninja Underwear by Sock It To Me; Ninjas are known for being stealthy (just ask anyone who has played hide and go seek with them), so they won't mind hiding in your pants all day. Our popular Ninja style is now available on underwear for women! These bikini cut women's underwear are comfortable and stylish. Our women's underwear are made of super soft jersey that provide comfort and breathability. Lace trim on both waist and legs provides a soft edge which minimizes tightness and lines.