Under Armour Joggers are a slimmer fit

My DS is 6'2 and 140. He's a swimmer with a 28 in waist. He wears the American Eagle joggers. The Medium Tall would probably work best for your DS. They're a little short on mine, but we tried a Large Tall this year and they are too baggy.

Urban Outfitters might have something. They carry quite a few different brands.

Eddie Bauer also sells medium tall

2nd vote for American Eagle--order online. my son wears a medium tall.

My DS is slightly smaller but similar proportions - currently 5'11" and 120 lbs.

Under Armour sells some sweatpants in a size "small tall" that fits him reasonably well.

LL Bean kids has a size 16-18 that has a slimmer waist than the men's version, these work for my kid but may be too short for yours.

American Eagle also has "small tall" for some of their sweats.

My 15 year old likes H&M joggers. They have a slim fit.

https://www2.hm.com/en_us/productpage.1098566002.html

My son who is 6'1" 140 wears Adidas and Champion.

Abercrombie? Hollister? Nike? Under armour?

Apologies if this has been asked before (I looked, but didn't find anything). My DS is 16, 6 ft 2 in, and 125 lbs. (Yes, he's seen a doctor, we know that he's underweight and we're working on that, but the doctor isn't worried -- neither are we -- it's just that he's tall and thin.)

My problem is that I'm unable to find him sweatpants that will fit. We've had good luck in the past with Gap/Old Navy Med Tall sweatpants, but those seem to sell out quickly and we haven't found any (either in store or on-line) that he likes. I'd appreciate any recommendations for other brands of sweatpants that accommodate Tall and Skinny people. He's not interested in jeans/khakis. TIA!