My 7-year-old, who wears a size 8, picked up these Kid Nation Kids Interlock Jogger Sweatpants with Pockets and wore them for as long as he could! He said he was comfortable and wanted to snuggle up to her like a blanket. I have the big one which is 8-10. (Usually 8-10 is an average). This is regular black sweatpants in a sporty style. My son is tall for his age and wears a size 8. It looks like a real size 8 to me. If your son is only 8, they will be a bit big. I feel like my son has room to grow in them. If your son wears a size 10 but is slightly smaller, you may be fine. I can live with them for a season and a half when it comes to size. They're not paper thin, but they're not super heavy either. So really cold days like polar vortices aren't ideal, but normal fall/winter weather in the 40's and 30's make for great sweatpants to wear and play with.
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