These Premium Faux Silk Lashes in a D Curl are the stronger of the curls. Beautiful to create lovely fine Classic Lashes while keeping your clients lashes healthy. 0.20s are heavier than your 0.15s but still can be used in a healthy way as long as they are applied to very strong natural lashes. Because they are Faux Silk they are a more gentle lash to wear. Beautiful lashes to use & apply but also for your client to wear. 16 Row trays so excellent value for money. Happy Lashing!