Nike Vomero 5s are really comfy and breathable. Ultraboost or Adizeros also super breathable.

Hoka Hopara 2 are worth considering. Will be a lot comfier, especially compared to the ACS Pro

Nike ACG Watercat+ if you don't mind some skin showing through the mesh.

Bonus points: you can easily walk at the water's edge at the beach

I have the Salomon acs pro and it’s great for summer hiking! They’re light, breathable, and dry quickly. But I don’t think they’re good everyday shoes. They’re pretty structured with the hard exterior, and not too much cushioning. And I’d imagine the traction would wear out quick on sidewalk.

Asics or Saucony with all the mesh

Maybe try Arctic Cool?

https://prz.io/2d4R5PrHE

I'd try supima cotton

My kinetic pants are super comfy and breath well in 100 plus degrees. But I’m stationed in Colorado. Your miles may vary.

Gonna throw in Dyzana into the ring here. I have 2 pairs of their V3 joggers and they are amazing. Lightweight and thin, with reinforced sections over the knees. Baggy enough to fit knee pads and slider pants, with noticeable vent holes in the rear of the shin. If anything, these are a bit too breathable in the mud or rain.

They now have a V4/Shift design that I haven't tried out yet, but hoping to once the economy stops it's freefall.

Kinetic

Scrubs. No joke. Cherokee brand. I wear either cargo or joggers. Knee pads underneath. Very light. Surprisingly durable.

Kinetic is the answer!!

I use the Merell Moab. Have a standard waterproof pair for most days and a goretex pair for the rainy days here in the NW. Though they both run kind of hot. Been looking into the shoes Drew Gibson wears (Vans UltraRange EXO) for a lighter, more breathable show during the summer.

I wear New Balance Fresh Foam Cruzv1 shoes and have had no issues. Breathability of mesh, but no dirt. I also have wide feet and found a reasonable size.

Altra lone peaks, a pretty breathable mesh while still being fine enough to keep dirt out. They are zero drop and that may not be for you tho

Brooks Cascadia, Saucony Peregrine

I'd try one of the Nike Trail options. I have the Juniper Trail, and they've been great so far. Decent mix of grip on hard surfaces and tread for soft surfaces, while still breathing and keeping out dirt fairly well.

Your best bet is likely to look for the budget options from bigger brands, the $15 pairs from brands like Nike, Adidas, or Under Armor are likely going to be thinner and more breathable than the more expensive and higher-quality options.

My son has a few pairs of the Adidas budget pants (I think they were a Dick's Sporting Goods exclusive) and they are great for summer, but I think that they have discontinued them.

IMO its the socks that matter more than the pants. Make sure your kid has thinner, more breathable socks. Thats the second layer and that's the part taking in the most moisture.

For the pants, buy the knock offs or the cheapies. They are thinner. They will rip easier, but just remember you bought the cheaper pair so having to go get another pair isn't terrible.

Knickers!

Been coaching in the southeast for years—heat and humidity are no joke 😅

For my players, the Champro Triple Crown Open Bottoms have been solid. Lightweight, don’t trap as much heat, and they hold up better than some pricier ones.

Also like the Easton Pro Plus for breathability. Avoid the super thick Mizuno ones—they’re tanks.

Pro tip: tell the kids to wear compression shorts or sliding shorts underneath that actually wick sweat. The pants can only do so much if they’re sitting in soaked cotton boxers lol.

Call me old fashioned but cotton pocket tees are my go to shirt. I've tried technical fabrics and poly cotton blends and while they generally perform better at keeping me dry, they have a way of turning sweat into really funky odors. Cotton, not so much. if you haven't tried wool socks, buy a few pairs. They might cost a little bit more, but when you take off your boots at the end of a long day and your feet are dry, you'll know where that extra money went.

I just discovered an underwear brand called Krakatoa. Marketing all over FB. It's the most comfortable boxer briefs I've ever felt. Literally disappears on your skin, no thigh sticking. A little pricey.

Linen is the best for outer clothes, like shirts, shorts, or pants. I have a knit linen blend short sleeve shirt that feels like I'm wearing nothing. I wear that on the hottest days.

Stay inside with ac. lol

I've had great success with "32 Degrees Cool" "unmentionables".

For shirts, quick-dry anything is great. "Amazon Basics" sweat wicking shirts are great.
Additionally I have a lot of them and, if expecting to sweat a lot, carry one or two with me for backup/change.

If you need to wear a business suit, definitely try an Underarmor compression undershirt.

Joylab I find it in thrift stores. It’s pretty phenomenal. https://www.wearecollins.com/work/joylab/ they are size inclusive https://shopjoylab.com/joylab-sports-bra/

I like fabletics!!

Darc sport

Yum

Vuori is really good for shorts but I'm not a fan of their tops

Your local running store. I get mine whenever they do their big sale. Don't cut corners on a quality running bra. Brooks Running have been my favorite. I can't remember the model name but it has several pockets, I can put my phone behind my shoulder blades. REI sells them online

Lululemon’s energy bras are my go-to’s!

I love Sweaty Betty stamina bras (provided you have a smaller chest) so comfy, no chafing, and breathable.

Panache if you are full chested.

The Brooks Dare is my go to. Comfortable but keeps my ladies strapped down well. I sweat a ton so my bra is usually soaked at the end of a run but I never feel it's too warm or anything like that

Get Under Armour, will last longer. Very good in hot conditions.

I am partial to the rapid vent, but I live in Chicago

AIM

Manny Pacquiao , Canelo, Mayweather

I have AiM 10 pairs, been using and washing them daily. Still feels like new! Material is thin and so soft, I would totally recommend it for warmer humid weathers!