Just right for my son, medium height and slim for 8 years small. He HATED wearing underwear and tried to sneak out without them. It has some sensory differences. I bought a pack from a local store and he liked it so much he wanted to wear it 24 hours a day, 7 days a week. I am ordering 2 more 3 packs to fill his box as the price is about 30% off on Amazon. Other reviews say they fit snug, but for my son they are not snug at all. The material is very similar to a sports shirt, but very light.
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