This pink Mainstays 30 fl oz tumbler features double-wall vacuum insulation and durable 18/8 stainless steel construction to keep drinks ice-cold all day. The tumbler includes a matching straw and a 2-in-1 lid design for sipping or gulping. It’s conveniently sized to fit in most cupholders, perfect for use in the car or on exercise equipment, and has a wide mouth that is easy to clean and dishwasher safe.