WELL-MADE 30th BIRTHDAY TUMBLER: Constructed of 18/8 food-grade stainless steel, the 30th gift wine tumbler is sturdy and built to last. BPA free clear lid with seal is great for outdoors without seeping at the edges. Besides, no worry about metallic taste when drinking, safe and healthy enough for daily use.

INSULATED THERMAL DESIGN: Our designer has tested that the stainless steel wine tumbler with double wall insulated design keeps your drinks cold for 9+ hours or hot for 3+ hours, which will bring you a colder ice drink whether swimming or family beach holiday for a wonderful summer. Also its keep-hot function is available in winter for Christmas new year gift.

MULTI FUNCTION: Mint wine tumbler is a cute, trendy and youthful wine tumbler, your first choice in home, camping, holiday, sports and travel stainless wine tumbler to go. It's good for storing any beverage such as coffee, wine, beer, water, juice, ice, cocktail and more.

SOFT REMOVABLE SILICONE TIPS: Silicone tips are soft enough that ensures no banging your teeth on metal, and they are nice to protect your lips and teeth from extreme temperatures. The silicone tips are easy to put on and take off means that they are convenient to use and can be used in multiple times. More importantly, they are the great products that help to save the earth, ocean and sea creatures.

EASY TO CLEAN: Our 30th birthday wine tumbler comes with eco-friendly stainless steel straw and straw cleaner and pluses one cleaning sponge for tumbler which will make it easier for you to deal with these tumblers filled with ice cream and various beverages after party.