This is a newborn-sized short-sleeved undershirt (bodysuit) from 10mois, designed for easy dressing with Velcro closures. Purchased new (original price: 5,500 yen) and used for only one month in September 2025. The baby was born large and gained weight quickly, so the size was outgrown quickly, which is why I'm selling it. The baby often spit up due to the force of breast milk, but never actually vomited. I used a laundry net when washing it in the washing machine. Since the usage period was short, it doesn't feel worn out and is still in good condition. The following is from the 10mois website: This undershirt allows for quick and easy dressing. With Velcro closures on the crotch, left side, and right side, dressing is complete in just three steps: 1, 2, and 3, after putting the sleeves on. Diaper changes are possible by simply opening and closing the crotch area. Also, the wide Velcro area allows for size adjustment as the baby grows. It fits snugly to the body, so it doesn't feel bulky when layered. Made of a jersey material that stretches well and is easy to put on active babies. It also has excellent absorbency, absorbing sweat for a comfortable, dry feel. The print pattern features motifs reminiscent of mountains, the sea, and the sun, inspired by the shape of the Velcro closures, which are a characteristic of the PATTO SATTO HADAGI. Comes in a set of two, convenient for washing and changing. Materials: Main body: 100% cotton Ribbing: 95% cotton, 5% polyurethane Velcro: 100% polyester Size: 50-60cm / (Length 35cm / Width 25cm / Sleeve Length 20.5cm)