You can become a cute Pooh. The fabric is thin terry cloth and cotton, so one layer is fine for summer. However, it might be chilly to wear as a Halloween costume, so I think it's okay to wear a long-sleeved T-shirt or tights underneath. There are no noticeable stains, but there is a feeling of use, such as pilling, so please refrain from purchasing if you are looking for something like new or are very particular about condition.