Nuby Grip N\' Sip No Spill Tritan Cup has a soft spout for easy drinking but is also made with clear Tritan so its strong and durable. Nuby Grip N\' Sip No Spill Tritan Cup has a Soft Flex silicone spout makes it super easy to drink and its kind to teeth too. Built to be extra strong with crystal clear Tritan, so it will survive any adventure and any tantrum. No spill touch flow valve opens when child sips Key features of Nuby Grip N\' Sip No Spill Tritan Cup: Soft Flex silicone spout Built to be extra strong Kind to teeth too No spill touch flow valve