Boxing shorts are designed to offer maneuverability and comfort while boxers are moving around the ring. Shorts for mixed martial arts are generally tighter than those of traditional boxing, which are looser and made of a thicker blend of fabric. Polyester allows the boxing shorts to glide smoothly even when moving quickly, and a strip of elastic in the waistband compensates for these movements as well. Creating your own shorts allows you to personalise your boxing shorts.
Find a shorts pattern and fabric you like. Most shorts are made from 100 per cent polyester but you may use whatever material you like. Reverse engineer your new shorts from an old pair that fit you well by taking exact measurements of the width and length. Be sure to factor in the amount of fabric lost from hems. Use the pattern to determine how much fabric you will need to use.
Purchase the fabric from a textile shop. Use a piece of chalk to mark out the pattern on the material. Carefully cut out the swathes of fabric for your shorts.
Sew the pieces together. Lay the two pieces side-by-side, overlapping, and begin to sew the legs of the shorts. Start at bottom of one leg, then switch and do other leg (also starting at the bottom). The shorts should be starting to take shape. Sew the seam of the crotch and then hem off a small cuff on the bottom.
Flip over the top to make waistband about one-inch thick and sew the bottom, leaving a channel for the elastic. Send a needle through end of elastic band and tie the thread off on both ends. Use the needle to thread elastic through the waistband. Make a slit in the back for both ends of the elastic to poke through. Pull them until the fabric around the waistband is slightly wrinkled and fasten the elastic in place. Sew it off with multiple passes to secure it in place.