TYR Solid Guard Diamondfit Swimsuit TYR Women's Guard Durafast Lite Diamondfit Swimsuit TYR Women's Guard Durafast Lite Diamondfit Swimsuit Saving lives is a serious job, so its only natural the gear is serious too. Thats why we engineered the Women Guard Durafast Lite Diamondfit Swimsuit. Constructed with Durafast Lite, the DGUL7A suit is 30% lighter weight than Durafast Elite swimsuits and allows for a 360 degree range of motion.