Pigeon SofTouch 2-Step Straw Bottle Set supports your baby’s smooth transition from nursing to independent straw drinking. Pigeon has developed a 2-step straw top transition based on over 70 years of research and understanding on baby’s oral motor development.Nurturing our babies also means protecting the world they’ll live in. That’s why Pigeon SofTouch bottles are now made more sustainably, using 20% bio-based plastic** certified by the International Sustainability and Carbon Certification (ISCC).