This hat was exactly what I was looking for. It's a soft, knit hat that will fit under a hooded bunting or sweatshirt.  Looks cute all on it's own too.  I appreciate the simple design and cute "loved baby" label.  I've only washed it once, but so far so good.
I ordered the grey in 6-12 size for my BIG 3 month old.  (He's currently wearing 6-9mo clothing.)  It is loose now and covers his ears, but still stays on well.  Plenty of room to grow into.  For more of a "beanie" fit I would need the next size down.
I'm back to order a second hat in green!