Product Specifications: 100% Cotton Height: 50-60cm Weight: 3-6kg I bought these just in case for my newborn, but since my baby was born in the summer, I didn't use the short underwear. Both items are in excellent condition, having been worn only once or twice. They are size ~6kg, so they can be used for babies up to 4-5 months old. Babies born in the fall and winter often use short underwear, so how about preparing for childbirth or adding to your collection? *There are no stains and they are in a clean condition, but please understand and accept that they are used items before purchasing.