UNACOO Boys and Girls 3 Pack 100% Cotton Casual Loose Top Crew neck short sleeve t-shirts are quite thick and heavy for a t-shirt. So I would say that they are not for a hot summer day. They don't really look like 100% cotton. They have a lot of stretch. So I sincerely believe it is 100% cotton. In addition, I then washed and they almost did not sit down. So, I think it's actually a cotton-poly blend with some spandex. The size I received was 9-10T. I have no idea what size it is but my 7 year old now wears most of his clothes in a size 8 or medium. They fit him perfectly and have room to grow so I will be wearing these shirts for more than one season. (Unless he gets them too dirty!) So I'd say 9-10 actually equals 8-10 or average. They're a little boxy, but overall a decent t-shirt set. It says 3 packs but you actually get 3 shirts.
Spotted Zebra Girls' Short-Sleeve Flutter T-Shirts: Amazon Brand for Fashionable Kids
43 Review
Shop the Comfy and Tag-Free Kid Nation Crewneck T-Shirt Collection π for Girls! Top-Notch Clothing, Tops, Tees, and Blouses for Your Little Fashionista!
45 Review
Amazon Brand Sleeveless Chambray Multi Dots Girls' Clothing
62 Review
Kid Nation Short Sleeve Crew Neck Heather Girls' Clothing for Tops, Tees & Blouses
52 Review