These are comfortable and fit the body well, so they can be worn from around 4 months old. When practicing tummy time, I think the absence of buttons on the stomach is a plus, as it won't cause any discomfort. There is some wear and tear. Please confirm that these are used items before purchasing. 【Product Description】 This is a set of 3 baby undershirts in size 6 months (67cm). The set includes three colors: white with a floral design, simple green, and cute pink. 【Material and Design】 Made of soft material that is gentle on baby's skin and designed for easy movement. Each undershirt has snap buttons for easy on and off. 【Care Instructions】 Machine washable for easy everyday care. - Size: 6 months / 67cm - Design: Floral - Color: White - Color: Green - Color: Pink - Quantity: Set of 3 Thank you for viewing.