This is an organic cotton cardigan that is gentle on baby's skin. I think it would be cute to put it on as a top over underwear. It has been used, but I think it can still be used. 【Material】 Made of ribbed knit material, it is soft, comfortable to wear, and easy to move in. 【Buttons】 The multi-colored buttons are an accent and are easy to put on and take off. - Color: Ivory - Material: Ribbed knit - Design: Whale embroidery - Button color: Multicolor (pink, blue, yellow) Thank you for looking.