Although the Finn hull has changed little since 1949, there have been developments to the rig. The original spars were made of wood until the late 60’s and early 70’s when there was a slow change to aluminum masts. Aluminum is significantly more flexible and gives more control over sail shape. It became common place after the 1972 Summer Olympics in Munich when they were first supplied to Olympic sailors. Recently, carbon fiber masts have become common place in competitive Finn fleets. The sails too have gone through revolution and are now commonly made of Kevlar.