Hello Sunshine Teether soothing rays provide gum relief, poppable bubbles keep hands busy (like bubble wrap, but better) Seriously soothing teether for gums—with the added bonus of our patented "pop" technology for busy hands Responsive bubbles encourage fine motor skill development and hand-eye coordination Hollow bubbles are easy for baby to grab & hold on to Dishwasher safe Refrigerating or freezing is optional (it's effective at room temperature, too) 100% silicone. No lead, PVC, BPA, latex or phthalates. Playful micro-textures massage sore gums (and entertain fingers)