Limited Edition 'cup half full kinda girl." Cup Say hello to the world’s first zero-plastic stainless cup! With dual-wall insulation for long-lasting temperature control and a ceramic lining for pure taste, it’s perfect for busy mornings & adventures. Leak-proof, durable & easy to clean, this cup is made for real life! With both Sip Lid and Straw Lid this cup switches from hot to cold brews in a cinch.