The wedge can be used in each stage of development from 3 months to 11 years. Filled with a high density foam for durability and ability to retain shape. Can provide posture support for infants, or on a chair for children. Comes with a handy carry handle! Provides a controlled fidgeting outlet to encourage engagement and attention. Made from durable, 100% waterproof wipe clean polyester for easy maintenance. W30 x D30cm.