Believe in the power of the Mothman!!! đ The Perfect Gift for Every Occasion: Surprise your fellow geeky and spooky enthusiasts with a gift that's both stylish and functional. Our 20 oz Skinny Tumbler Collection makes for a fantastic present for birthdays, holidays, or any celebration, allowing your loved ones to carry their passions with them wherever they go. 20 oz (600 ml) each water bottle with portable sippy up black lid and straw. Made of 18/8 304 food grade stainless steel, double walled, which can keep the water hot or cold for hours.