this is a really cozy onesie, the material is nice and it's not too hot. The large size is in fact large (I had been skeptical when I ordered it since Japanese sizes tend to run smaller) it's quite baggy but that's perfectly acceptible in a onesie. The pocket is a bit small for my cat to sit in comfortably, but I have a somewhat pudgy cat so that's probably why, she's still willing to put up with me placing her in it though