Baby underwear, brand new, unused. The size is 60, and while it was a bit big when my child was 3kg, it became the perfect size around 6kg. It's recommended to have these ready from the newborn stage; they'll be a bit big at first, but you can use them for a long time. Here's the product description: 【Convenient 4-Piece Set of Baby Underwear】This set includes two each of the essential combi-suits and short underwear, perfect for preparing for childbirth. The roomy size is also great for larger babies! Babies sweat a lot and often spit up milk or have diaper leaks, requiring multiple changes a day. This set is convenient for washing and for buying extras after birth. The simple and cute design is suitable for both boys and girls, making it a great choice for preparing for childbirth or as a gift. (About Combi-Suits) Combi-suits have snaps at the crotch that allow you to separate the baby's legs. Because they are split in two, they won't ride up even when the baby kicks their legs, and they won't hinder the active movement of the baby's legs. They play a role in keeping the baby warm, preventing chills, and absorbing sweat, and can be used in various ways depending on the season and situation. Combi-suits with stylish designs are also great as loungewear in the hot summer. 【Safe and Secure Organic Cotton】 Made of 100% organic cotton, it's very soft and gentle on delicate baby skin, making it safe for everyday wear. It's breathable and absorbent, allowing you to keep the skin comfortable and clean at all times. It's a durable material that doesn't easily damage or lose its shape even after washing. 【Comfortable Year-Round Material】 The breathable underwear that can be used throughout the year is useful as the first wear for babies who are not yet good at regulating their body temperature. It absorbs sweat and moisture well and also has excellent heat retention, so it's okay for babies to wear only underwear at home in the summer. From autumn to spring, it's also great as an inner layer under coveralls, etc. In the cold winter, dress the baby in a combi-suit over short underwear to adjust their body temperature. 【Easy-to-Wear Design, Gentle Sewing】 It's an easy-to-change front-opening type with strings on the inside and outside to prevent it from coming undone. There are snaps at the crotch for easy changing during diaper changes. It's highly elastic and fits the baby's body. The seams and tags are sewn on the outside to prevent them from directly touching the delicate baby's skin.