From Tommee Tippee
Free-flow cups are recommended by health professionals: Cups without a valve help your baby learn to sip (from 4 months and up)Responsibly sourced: Our First Cups are made from 98% bio-based plastic*, with FSC certified packaging** (By choosing this product, you help take care of the world's forests. Learn more: www.fsc.org) Leak-proof: Our First Cups won't leak when the free-flow spout is flipped down Bite-proof: Durable one-piece spout can withstand tiny teeth (and flips down between sips) Dynamic design: Curved handles are perfectly sized for your baby, so they can grip, lift and sip. Once they've grown out of using a free-flow spout, simply pop the lid off for open cup drinking