Thank you for looking. This is a 2-way all-in-one romper in light blue with stripes. It can be worn from now until just before summer. It is not thin. Size: 60-70 100% Cotton Nishiki Co., Ltd. As it is a 2-way all-in-one romper, it can be worn from newborn. This is a used item, so please consider it if you understand this. 2-way all-in-one romper Newborn Boy