The sleeves are not long sleeves. The pants are also not long pants. I think it's fine to imagine three-quarter sleeves for a 70cm baby. Of course, when the baby is a newborn, it will be a little big, and it will feel like long sleeves and long pants. The fabric thickness is neither too thick nor too thin, about the thickness of regular cotton fabric. The official color is off-white, but when I look at it, I think it's a pale yellow. It's the color of Classic Pooh. I've only washed it once. I'm selling it because my child has outgrown it. Please note that I will fold it up small when shipping. Instant purchase OK.