Nursin" SMART™ Silicone Training Straw Cup may help make the weaning period easier because the same soft bottle is transitioned into a straw cup. Parents can help Baby get used to drinking from a cup by squeezing the bottle and the silicone straw cup can be used as a tube feeder. The patented inner valve of the Nursin" SMART™ Silicone Training Straw Cup controls the follow of liquid, allowing it to be adjusted for baby"s comfort. Also, an increase in emotional IQ has been proven because the soft silicone bottle resembles skin-to-skin contact during feeding. All silicone parts are made with medical-grade silicone that will endure chewing and biting. Recommended for 10 months.