HEARTBEATS: Unique heartbeat rhythm designed to mimic the mother's heartbeat of their mother; calming them like they are nuzzled up against their mother CALMING: Mother's heartbeat helps cats transition to their new home and calms during separation; reducing anxiety and stress ONE SIZE: Kitten pillow is perfect for kittens as well as adult cats MACHINE WASHABLE: Calming cat pillow includes a machine washable heart shaped pillow and a removable calming heartbeat device BRAND YOU TRUST: Designed by K&H with OVER 20 years of experience in creating safe, innovative, quality products for pets