From HALO® x Disney, this wearable swaddle blanket features: Adjustable fasteners for perfect fit Immobilizes arms to prevent startle reflex or scratching Allows for easy diaper changes Scratch-free zipper covers “Back is Best” embroidery Premium fabric; no added chemicals Use over regular sleepwear roomy design is recognized by the International Hip Dysplasia Institute as promoting healthy hip development (0/3 Months) fits 19-23 in / 6-12 lb (3/6 Months) fits 23-26 in / 13-18 lb Imported.