The best part about these teethers? You get 3 rings in 1 design! Their hollow shape makes them easy for little hands to grab, and their smooth and textured surfaces provide added relief for your baby's gums. Seeing as they are pure silicone, they are also very easy to clean. Simply wash with mild soap and water, or throw them on the top shelf of the dishwasher. You can also put them in the freezer for extra relief when those painful teeth start poking through. Little Cheeks teethers are made using 100% food grade silicone that has been FDA approved. They are non-toxic and are free of any harmful chemicals, which means no BPA, lead, PVC or phthalates.