Open water and triathlon specific mask. Featuring Biofuse® technology for the ultimate in goggle comfort.The brand new Biofuse Rift Mask has been re-engineered to deliver an ever more immersive swimming experience. Featuring Speedo Biofuse® technology which uses soft and flexible materials that adapt to the shape of your face and makes your comfort top priority. The new easy to adjust button mechanism combined with the wide split strap makes for a convenient and comfortable fit every time you swim. Ideal for open water swimming and triathlons.