I first bought a size 4 for a 3 year old after reading the comments about going up a size and wanted it to last. That's the best I could do. My 3 year old grew up using them until he was 5! Of course they were a bit short in arm length but towards the end they were comfortable to wear under other long sleeve shirts and uniforms. Ideal for pajamas on cold days. I bought them again when I was 6 years old, now a size 8 because they shrink a little. So I hope they last a little longer. I love the quality, so soft, so fresh, stretchy. not that tight. I chose off-white over off-white because I had that before and it wasn't transparent at all. I have them in all colors!
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