Aquasphere swim mask - Vista - Clear/blue (Smoke lens)An absolutely perfect swim mask for outdoor swimming and triathlon has to be the well known Vista from Aquasphere. An incredible number of swimmers already use this mask today with great success. Once you've tried a pair of Vista, you will quickly understand why it is the most popular on the market. It is well made, so it's not surprising that it is used both indoors and outdoors and performs optimally in both circumstances. This swim mask is the