Spout cup is great for both toddlers and parents. The soft silicone spout makes sipping easy and fewer parts ensures easy cleaning of the cup. All Philips Avent bottles and cups are compatible excluding the glass bottles and the Grown-up cup. So you can mix and match to create the perfect cup, suiting your toddler's individual development needs.The one-piece silicone spout is easy to drink from: liquid starts flowing when pressure is applied to the spout.