When it comes to using promotional products to draw attention to your product or brand, few items work better than these unique 16 oz. Double Wall Acrylic Tumblers with Straws. This 16 oz. Double Wall Acrylic Tumbler with Straw is the perfect item to use for promotional purposes because of its completely unique designs and quality features. From afar these 16 oz. Double Wall Acrylic Tumblers with Straws may look like disposable drinkware items, but they are in fact reusable and incredibly stylish. Since they come in colors like green, red, orange, blue, purple and charcoal, they can fit any color scheme or use multicolor designs to draw attention. These acrylic tumblers hold up to sixteen ounces of liquid storage which is often considered the perfect portion.