Isabey Isacryl Synthetic is the finest handmade synthetic brush available. A special mix of thick, synthetic fibers replicates the finest natural hair with the durability of a synthetic so it keeps its tight shape longer than any other synthetic. Isabey Isacryl brushes are ideal for oil paint and heavy body acrylics. They have an incredible feel and spring for unparalleled precision and control. The finely tapered fibers interlock, keeping a perfectly sharp point and edge resisting splaying when used with solvents.