FOR 30 OZ TUMBLERS - Package includes 4 Pcs Straight Straw, 4 Pcs Straw Tips, 4 Pcs Bottom Silicone Tube, 1 Pcs Straw Brush. Compatible with YETI, STANLEY, US Acrylio, BJPKPK, Simple Modern, REDUCE, Tervis ,Greens Steel or other 28-32 oz tumbler or glass bottle. UPGRADE SILICONE STRAW TIPS - The long silicone tip also prevents feeling too hot or too cold and protect your mouth from scratched in the same time. The newly upgraded spout is designed to better fit the natural curve of your lips, delivering a superior drinking experience SAFE AND HEALTHY - Premium food-grade 18/8 stainless steel and silicone material, BPA Free. It is perfect for you to enjoy any cold or hot drink. Whether you're savoring a steaming coffee, a refreshing iced tea, it delivers a consistently pure taste while keeping your drink at the ideal temperature SPECIAL DESIGNED BOTTOM TUBE - To prevent the stainless steel straw from rubbing against the bottom of the insulated cup and causing noise, we designed a separate silicone base sleeve that protects your cup's interior while reducing unwanted sounds BETTER SERVICE – If there are any problems or question, pls feel free to contact us. We will reply to your message within 10 minutes during business hours