While Pop On Veneers are not bulky in material (less than a mm), they are still something new that will fit over your teeth so your tongue and mouth muscles adapt to them. It may be an adjustment to having them on, but the more you practice speaking with your Pop On Veneers, the easier it will be. We found that singing your favorite song in the shower helps! Feel free to reach out to us with any further questions or concerns. Have a wonderful day!