Microlite White is a filler that works perfectly for large damages. It is lightweight, strong, and very easy to sand. A handy first aid kit for your surfboard enclosed in a waterproof container. Once dried, apply a layer of clear SOLAREZ Fiberfil on top of Microlite White for added strength. You can also use just Fiberfil for smaller damages. The kit includes: a tube of Microlite filler, a tube of SOLAREZ fiberglass resin, an acetone-soaked wipe to clean the damaged area, a piece of sandpaper with a grit of 60/240, and a spatula for spreading the mixture. Everything is enclosed in a handy waterproof container. Not suitable for use on Epoxy boards.