Excellent Compatibility: The straws fit perfectly with Stanley Quencher 40 oz, Stanley Adventure Travel Tumbler 40 oz(fit H1.0 and H2.0), Stanley Cup 40 oz, Simple Modern Tumbler with Handle 40 oz, and other similar-sized tumblers. The straws are long enough to reach the bottom of the cup and provide sufficient airflow for smooth sipping. Please note that they are only compatible with "Adventure" series, not compatible with "Iceflow" series! Eco-friendly and Durable: These reusable straws are crafted from premium stainless steel that is durable, safe, and eco-friendly. They are a great alternative to plastic straws and help save the planet Safe and Comfortable: The straws feature silicone tips that are gentle on your mouth, and protect you from hot or cold sensations and metallic aftertaste. They are also kid-friendly and adult-friendly, as they won’t hurt your mouth or teeth Easy to Wash: The straws include 4 cleaning brush that helps you keep them clean and hygienic. You can also toss them in the dishwasher for easy cleaning Satisfaction Guaranteed: We stand behind our stainless steel straw replacement. If you are not happy with the product for any reason, you can return it within 30 days of receipt for a refund You will receive 8 pieces of 0.32inch stainless steel replacement straws for Stanley Adventure Quencher 40oz travel tumblers and 4 pieces 12inch cleaning brushes. If you want to use reusable stainless steel straws for other model tumblers, please confirm carefully first! stanley 40 oz straw