Come and Check Our Branding Solutions.This 20oz coffee tumbler has Double-layer, inner and outer 304 18/8 stainless steel cup + vacuum insulation layer to ensure insulation performance. Non sweat outside. Re-tent heat or cold throughout your sleep time or busy working hours, which ensure your drinking experience.The seal ring around the lids has been redesigned. The silicone on the top of lid seal tightly. Pls check inventory and detailed info before placing your orders.