I ordered them in size 7/8 for my child, they were too big so I ordered one size smaller and I like them, I always leave nor the larger size , so she will have a pair when she grows up and wears them because i love that they have elastic at the waist, i don't have to worry about my kid having trouble unbuttoning his pants. I would say the thickness is just right, not too thick then my kid won't sweat too much or anything.
Hollhoff Gymnastics Playgrounds Shorts - Breathable Clothing for Girls
48 Review
Eocom Pairs Childrens Winter Animal Girls' Clothing
64 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review