<p>I am not sure if this has been addressed about pants and belts. If a 13 year old is slim and stays slim for a while, length can become a problem. The pant that fits at the waist may become too short. I always bought unhemmed unpleated pants for my son. That wayI could leave a lot of let-out in length when I hemmed them. </p>
<p>Another issue about hemming and length is how low will the boy actually wear the pants. I worked in the cafeteria at the school 3 days a month and got a grin out of how low some boys wore their pants. I finally told my son that I was tired of seeing the hem of his pants getting over-worn when he “wore them low.” After that we compromised and he picked a low-ish spot as his “waist” so that the pants did not drag.</p>
<p>There is a thought that a belt should be a size larger than the pant waist size. If the boy is getting bigger fast, that can necessitate buying belts each time the pants waist size makes you buy new pants. There are belts that have double prongs and holes the entire length of the belt. These can provide a longer use of the same belt. Just be careful on the width of these belts. The largest standard width belt for belt loops is 1-1/2". There are pants that have larger loops, but you have to seek them out.</p>