Miracle Belt MB303 18" to 28" Therapeutic Weighted Belt - Large Using the latest in foam technology we have created the most comfortable safe and durable line of sensory The Miracle Belt consists of EVA foam for flexibility and stability along with neoprene weight pouches The Miracle Belt was specifically deSigned with non removable weight to protect your child. The weight provided in all Miracle Belts has been extensively tested and is proven to be the most effective Three pound Miracle Belt for children who weigh between 45-75 pounds.