As one of your baby's first forays into drinking solo, it was so important that these sippy cups be soft and safe for developing gums and mouths - no hard edges here. Designed for weaning and mastering the skill to drink, EKOBO's 100% silicone sippy cup is leak-proof and unbreakable. It has a removable lid with a small spout and just the right size for little hands to practice holding and tilting in preparation for using an open cup.