We often get questions asking what is the difference between our styles of inserts. We have two padded inserts, Demi Boost and Ultra Boost; and we have three lightly lined inserts, Perfect Boost, Invisible Lift and Micro Lift Inserts. Demi Boost Inserts comes in an oval shape and is perfect for sweetheart necklines. It does 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. Invisible Lift Inserts is a lightly padded insert that is perfect for girls looking for a natural push up effect. These are also great for girls looking for a little added security against wardrobe malfunctions. Perfect Boost Inserts boost up to one cup size and are suitable for demi style tops and dresses. Micro Lift Inserts are suitable for a light lift in your bikini and for preventing nipple slips when in the water. Each Micro Lift Insert box comes with two pairs of Micro Lift Inserts, ensuring you always have a spare set ready! Which one to pick 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. 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! For best results, use the inserts under tight, structured clothing and the thicker the material the better!