Vertiplay? toys stick on most vertical surfaces; increasing play area and creating a unique interactive experience. Clean Floor, more fun! Toys on the wall means less clutter on the floor. These adorable animal knockers dress up and personalise doors. They also make a great percussion instrument! Teach them about the importance of knocking before they enter with this clever little toy. This toy helps develop gross motor skills and musical awareness. Fetaures: Animal themed door knocker/percussion instrument Supplied with self-adhesive backing Removable and reusable No tools required Made with high quality wood from sustainable sources Toys stick best to untreated or painted wood, laminates, dry walls and most smooth surfaces May not stick well on textured painted walls and rough surfaces Dimensions L x W x H: 10. 7 x 1 x 10. 3