WEIGHTED TRAINING CUP – Open cup drinking for babies 4 to 6 months to help develop muscles in baby's mouth, strengthen swallowing and to help prepare for speech; sloped interior to control flow of liquid for safer drinking as baby learns to sip SIZED FOR LITTLE ONES – Spill resistant cup designed for babies to hold, helping develop motor skills; essential in transition from bottle to cup; textured ridges for easier grip; holds up to 2oz/60mL; measurement lines from 10mL up to 50mL and at 1oz PLATINUM CURED LFGB SILICONE – Bumkins uses the highest quality curing process; it does not result in the creation of any by-products, ensuring you get the purest silicone; made from 100-percent food-safe silicone for your little one QUALITY – At Bumkins, we use 3rd party labs to ensure the products we manufacture comply with CPSC and CPSIA standards for BPA, Lead, and Phthalates ABOUT BUMKINS – For over 30 years, Bumkins has been creating thoughtful and responsibly made essentials for babies and kids, making parenting easier so families can cherish those special early childhood moments; we are based in Phoenix, AZ