HSI 1 Touch Snap On BPA-free Multi-purpose Silicone Lids and Glass Food Containers, Power Lock, 5 Count, Blue One touch lid snaps on and off with only one touch and this technique is patented Convenient, one touch instead of opening and close 4 wings like the conventional lid Never leaks - the contents in this air-tight container will never leak even when upside down or shaking it back and forth Safe BPA free, our container does not contain harmful environmental hormones so without worrying, you can use it in the microwave