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. Playful micro-textures massage sore gums (and entertain fingers). FEATURES: Diswasher Safe Refrigertaing or Freezing is optional (its effective at roon temperature too) 100% silicone. No lead lead, PVC, BPA, Latex or Pathalates