Boys Khaki Dress Slacks -- Boys dress slacks in khaki for special occasions. 100% polyester dress pant. Combine this with one of our vest sets, or a blazer, or even as an extra pair to coordinate with one of our handsome suits! Baby boy sizes come with elastic waist, Toddler sizes have elastic on back of waist front band with fake fly. Big Boy sizes come with Elastic on the back, zipper and front pockets.