Different hues, Different Capacities 304 Stainless Steel Inner Tube Double drinking cup mouth design with straw for straight sipping Handle form, convenient to hold 360° water-proof sealing rubber ring Stay both warm and chilly. Synopsis: 360° Leak-proof The lid features an integrated silicone sealing ring. Dual drink design One cup for simultaneous use, direct drink/straw switch as you please It has double anti-scald protection, so putting boiling water in it won’t burn your hands. Many options Different capacity, five colors, satisfy various demands Retain warmth Efficiently retain heat for four to six hours, obstruct external temperature transfer and maintain the temperature within the mug. Many settings home, office, movie theater, and library