I received two kevlar sails from Masthead Sails a main sail and a jib that were rated good and good+ respectively. The jib lasted one day and delaminated beyond repair and the main was also delaminating and I doubt if it can even be used as it had been folded for a long time and had cracks in the Kevlar at several places on the fold points. I contacted Masthead several times by email regarding this and received no reply from them.