[LIFELONG USE] It is made of unbreakable food-grade material. No hardening needed and it's super easy to clean. Double-wall design keeps the outer wall cool at all times, you don't have to worry about it burning your hand when you grip it. Retains old flavors and does not break or retain flavors. [BEST COMBINATION] This Yerba Mate cup is fantastic for enjoying delicious and healthy Yerba Mate. This mate shape, with a narrow base and a wide opening, the best shape for optimal yerba mate flavor and duration. [GET A FANCY, EYE-CATCHING] Completely smooth, no weld marks inside. The curved design makes it easy to grip when you walk. [SO MANY USES] Our Mate gourds can be used indoors or outdoors, not only for Yerba mate, but also perfect for storing any drinks like wine, champagne, cocktail, beer, coffee, juice, tea. [EASY TO CLEAN] This Yerba Mate Tea Gourd Cup Set is incredibly convenient to use and even easier to clean. requires no hardening before use Name: Double-layer tea cup Process: The bottom is narrower and the opening is wider, retaining the best shape for yerba mate flavor and duration Capacity: 8oz Uses: yerba mate, coffee, water, milk... Color: Black Material: stainless steel Size: 80.5 x 108 mm Package Contents: 1 x cup 1 x spoon straw 1 x cleaning brush Only the above package content, other products are not included. Note: Light and different screens may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.