Let your little ones enjoy the summer in warm sleeps and joyful playtimes with the most natural fabrics! With its breathable muslin structure woven from 100% cotton threads, this double set does not make your baby sweat and keeps it dry all day long. While it brings joy to your baby's world with its cute castle print made of colored blocks on the front and "Happy Time" detail, it also offers a clear elegance that does not tire the eyes with its soft color tones.