Second Nature Flow-Control review
Using patented Flow-Control Technology, Second Nature Bottles allow your child to control the flow.At the heart of the Second Nature Bottle is the revolutionary All-Stages Nipple.The nipple has a membrane containing 25 micro-holes that flex open as baby feeds. The stronger baby suckles, the more the membrane will flex and the more the flow will increase, so there is no need for different size nipples as baby grows - it allows baby to control the flow.When not feeding, these micro-holes stay closed — eliminating spills and messes!The bottle itself is a sturdy, well marked bottle made of polycarbonate plastic, a highly durable plastic that is microwave and freezer safe. Each comes with a pearlized dome cap and ring, and an All-Stages Nipple.These wide neck bottles are available in 125ml or 250ml sizes.