The bubba Big Straws are designed specifically for your bubba mugs. This 5 pack of drinking straws are compatible with the envy line of bubba products such as 17oz and 24oz Envy tumbler, as well as the 24oz and 32oz Envy mugs. They also work well with the 34oz mug, 34oz travel mug and the 52oz mug. The bubba Big Straws are dishwasher safe, not intended for microwave usage and recommended for cold beverages. They are made of 100% food-grade silicone and are BPA-free.