Tommee Tippee Straw Cups Are Great Alternatives To Sippy Cups, With A Soft Straw Helping To Develop Sipping Skills. The Soft, Silicone Straw Is Easy To Drink Through And Little Ones Don'T Have To Tip The Cup Up Very Far To Drink From It. This Straw Cup Encourages Sipping Which Supports A Healthy Development Of The Mouth, Jaw And Teeth And Has Been Accredited By The Oral Health Foundation. Featuring Intellivalve , A Unique Anti-Leak Technology Which Guarantees This Drinking Bottle Is Completely Leak-Proof As It Withstands Internal Pressure Meaning The Bottle Won'T Leak Even When It Is Turned Upside Down Or Shaken. Our Unique Valve Both Seals And Regulates The Flow Of Liquid To Stop Leaks And To Ensure Easy Drinking. • 100% Leak And Shake-Proof: Our Unique Intellivalve Anti-Leak Technology Guarantees This Trainer Straw Cup Is Completely Leak-Proof, Even When The Bottle Is Turned Upside Down Or Shaken. • Hygienic: The Drinking Straw Is Made With Bacshield Antibacterial Technology That Reduces Bacteria By Up To 99.9%* By Preventing The Growth Of Unwanted Microbes. • Super Soft Straw: The Soft Silicone Straw Makes Drinking Easy And Is Gentle On Sensitive Gums And Flips Down Between Sips To Keep It Clean. • Accredited By The Oral Health Foundation: This Soft, Smooth Straw Is Gentle On Gums And Encourages Sipping Which Supports A Healthy Development Of The Mouth, Jaw And Teeth. • Double Wall Insulated: The Insulated Base Minimises Condensation And Keeps Water Cool To Encourage Drinking And Keep Kids Cool While Playing. • Easy-Hold: The Ergonomic Design Aids Toddlers In Developing The Hand-Eye Coordination Required To Hold, Lift, And Sip, All While Sitting Upright. • Easy Clean And Bpa-Free: Our Sippy Cups Are Easy To Clean, And Steriliser And Dishwasher Safe. • Products Are Bpa, Bps, Pvc, Phthalate And Nitrosamine Free