Transformers Optimus Prime Roleplay Basic Costume Mask is 10 inches tall, perfect for halloween costumes, general costume, roleplay and dress-up. This blue Transformers Optimus Prime mask features an elastic strap for an adjustable fit. Suitable for ages 5 years and up, this durable and safe costume allows kids to embark on endless adventures with ease, making it the perfect addition to any young enthusiast’s collection.