Stacks of Circles Soft Teething Toy Educational Learning Baby Toy Stacking Ring Toys for Babies Boy and Girl. Food-Grade Silicone Material: Made from 100% food-grade silicone, free from BPA, PVC, and phthalates. Soothing Teething Relief: Soft, flexible material gently massages gums with textured surface for comfort. Ergonomic Grip Design: Easy-to-grip handles fit perfectly in tiny hands to encourage motor skill development. Dishwasher Safe Cleaning: Easy to clean with warm soapy water or in the dishwasher for busy parents. Vibrant Color Options: Available in a range of bright colors to capture attention and aid visual development. Portable and Lightweight: Compact size and lightweight design make it easy to take on outings. Customizable Design Support: Supports customized colors, sizes, and designs/shapes/patterns upon request. Durable and Long-Lasting: Built to withstand constant chewing and biting throughout the teething phase.