Wiggle Seat Little Sensory Cushion Green 27cm (age 3-7 years) offers a thoughtfully designed, durable resource for hands-on learning. Little Wiggle Seat for Young Kids Sensory Chair Cushion (27cm. 10.5"")_x000D__x000D_Specially designed wiggle seats for young children help calm and focus those in early primary school and preschool who have a hard time sitting still_x000D__x000D_Features. _x000D__x000D__x000D_ Allow children to quietly move while working. enabling them to focus. stay on task and be more productive_x000D_ An outlet for excess energy which enables kids to sit still in the classroom. at meals and around the house_x000D_ Flexible nubs on one side and small bumps on the other can easily be felt giving a choice for just the right amount of tactile stimulation_x000D_ Ergonomic disc causes the body to stabilize itself improving posture_x000D_ Portable alternative to balance balls with the same benefits_x000D_ Easy. inflation pump is included and firmness can be customized to contour exactly to each child's needs_x000D_ Comfortably fits a young child perfectly unlike larger cushions and balance discs_x000D_ Effective on chairs. benches. or directly on floors_x000D_ Safety tested_x000D__x000D_Size. 10.75inches. 27cm diameter.