OUI's stainless-steel thermos with an insulating double-walled design features a smooth, soft-touch finish. Topped with an air-tight lid that includes a folding travel spoon. 400ml capacity. 75% stainless steel, 20% PP, 5% silicone. Do not microwave. Hand wash. OUI is a new brand of thoughtfully designed living solutions that make room for your best, most joyful life. OUI creates unique products that brim with purpose and positivity. Make room for your story with OUI. Exclusive to Indigo.