Demi Boost and Ultra Boost are our padded inserts that lift and add volume. Demi Boost inserts comes in an oval shape and is perfect for sweetheart necklines. It can boost up to 2 cup sizes and can also be used inside bras to turn any bra into a push up bra. Ultra Boost inserts come in a triangular shape and also boost up to two cup sizes, these are better in v cut tops and triangle style bikinis. The right insert is based on personal preference and what type of tops you tend to gravitate towards. Demi Boost inserts are definitely a fan favourite, very versatile and compatible with a lot of structured tops and dresses. For best results, use the inserts under tight, structured clothing and the thicker the material the better! You can have a read at our blog “What to Wear with BOOMBA Inserts" if you need help picking an outfit. If you have any questions or are not sure which one to pick, please reach out to us and we would be happy to help!