If you need a wind indicator that is at eye level and always in sight, this works well. It is an inexpensive indicator that straps around your mast helping you find the wind beating upwind or running down. It fits a wing mast or an older round. It is 12” long with a 6” indicator. It has a bungee strap for easy install and removal. I use this product every time I sail my Finn. LittleHawk Mk2