The Infantino My 1st Tumbler Limited Edition 6m+ The Grinch Red Cup is a 9 oz. sippy cup suitable for infants as young as 6 months. With a straw lid and handles for easy gripping, this cup is made of silicone material and is dishwasher safe for convenience. The festive red color and The Grinch design make it a charming and functional choice for young children transitioning to a tumbler.