KEWOS stands for the Kegel Workout System, of course! This set of differently weighted, silicone encased balls, slide into dual holders with a silicone pull cord, allowing you to comfortably select what size you want to start with to build up resistance and strength for that all important PC muscle. Just start with the lighter ones and try to tug them out while squeezing your inner vaginal muscles. Keep working your way up to strength and gripping satisfaction! LiebeToys.com