The Kids Pajamas Monster Animal Cosplay Costume Sleepwear Onepiece in size 8-10 year old by Sincere Party is a fun and cozy choice for young children. Made of fleece material, this blue one-piece suit features an elastic/stretch design for comfort during sleep. The cosplay theme and monster animal design add an element of playfulness to bedtime routines, making it a unique and entertaining addition to any child's sleepwear collection.