Perfect Fit: Our Owala accessory silicone bottom sleeve is specifically designed for the 30oz and 40oz FreeSip Sway cup models. It perfectly conforms to the contour of the bottom of the cup. This bottom sleeve is neither too tight to affect the use of the cup nor too loose to cause it to fall off easily, ensuring stability and convenience during use. The bottom sleeve is suitable for cups with a bottom width ranging from 2.77 to 2.85 inches.

Special Design: Designed specifically for Owala 40oz and 30oz FreeSip Sway tumbler, our silicone boot features a smart vent at the bottom. This vent makes installation and removal a breeze. When putting it on, air escapes quickly, helping the boot fit smoothly. When taking it off, air flows in through the vent, preventing suction and making removal easy. No more tugging or struggling—just quick, hassle - free use every time.

Premium Quality: Our Owala sleeve is made of food-grade silicone material, which is non-toxic and odorless, and will not cause harm to human health. It can be used safely and reassuringly. At the same time, the silicone material has good corrosion resistance and aging resistance, and can be used for a long time.

Easy to clean: Our Owala Freesip Sway silicone boots have a smooth surface that is not prone to staining, making them extremely convenient to clean. You can directly rinse them with clean water or put them in the dishwasher for cleaning to keep the bottom covers clean and hygienic.

Scratch & Wear Resistant: Our owala accessories bottom covers are made of high-quality silicone material, which can effectively protect the bottom of the cup from scratches and collisions, preventing dents and scratches. This helps keep the cup looking good and extends its service life. It's especially suitable for people who often carry their cups out, reducing the appearance damage caused by daily wear and tear.