This is a set of 5 baby sweat-absorbent pads. They are used by placing them between the undershirt and the back. The white part goes inside the clothes, and the patterned part hangs outside. They are made of cotton and have a feel similar to a gauze handkerchief. Some have been used a few times, but there are no noticeable stains. Some have never been used. They were purchased 5 years ago and stored in a closet. They are a material that wrinkles easily when washed. They have been stored after washing, so they are wrinkled. They can be used not only in the hot summer months, but also in the winter for long drives when sitting for long periods, or to prevent stuffiness when using a baby carrier for extended periods.