Your little one can celebrate his birthday with retro style with the fun striped pants and colorful mod numbers. You will customize the shirt for their special day by choosing the number and the sleeve length. The mod number has decorative top stitching in white all on a black fitted style shirt. The matching pants are made from striped denim with a contrast cuff of the retro numbers fabric. Trousers have a slightly tapered leg, a relaxed fit and a comfy elastic waist. They can be worn cuffed or uncuffed as your little guy grows. Machine-washable cotton.