The First Years Take & Toss Spill - Proof Cups - 6pk (7oz) are durable enough to use over and over again, but are also disposable. Made with snap-on lids to prevent leaks and help keep drinks fresh, they are valve free and spill proof. Most lids for these First Years Take & Toss Sippy Cups are interchangeable with other Take & Toss products. All Take & Toss items are dishwasher safe and BPA free. The BPA-free sippy cups are great to have on hand at home for meals, snacks or when on the road. The travel cap covers the spout while on the go.