Approximately 21 x 21 cm, for 0-3 months. Purchased October 2025. Usable from newborns (0 months old), and I used it with a gauze liner for about a month. I think the condition is relatively good! The surface is pile fabric, and the back is mesh fabric, so it's absorbent and breathable, and I found it very useful. It can be machine washed. Please consider purchasing in bulk as well.