Elegant upscale and hand-crafted with amazing attention to detail these luxurious glass Ben-Wa balls are made from borosilicate glass and designed to last a lifetime. Their size and weight make them perfect for vaginal stimulation and exercise use and the nonporous glass is hypoallergenic and body safe. With regular use you will enjoy improved muscle control and stronger more frequent orgasms. Vaginal stimulation and exercise use. Clean before and after each use with soap and warm water or throw it in the dishwasher for a worry free wash after the fun.