This is a set of two pajamas. Both are made of material that can be worn year-round. The left one I bought myself, and the right one I received from someone else. The animal-print one on the right has buttons, a belly band, and adjustable sleeve lengths. The left one doesn't have a belly band or buttons, so children can change easily. Both have overall signs of wear and pilling. See photo 6 for stains. Please purchase only if you understand that this is a personal inspection. Color: Pink Sleeve Length: Long sleeve, Short sleeve Season: Winter, Autumn, Spring, Summer