< p > Frameless masks have been loved by many divers due to their low profile and ability to fold for easy transport. The Cressi frameless design attaches a high-quality silicone skirt directly to a single lens for ultimate simplicity. < /p > < p > The small internal volume of the mask makes it easy to clear. Additionally, the F1 features special quick-adjust buckles, mounted directly on the skirt for flexible adjustment and reduced resistance. < /p > < strong > Technical Features: < /strong > < ul > < li > Extremely low volume < /li > < li > Single lens design for a wide field of view < /li > < li > Silicone skirt attaches directly to the lens for lower weight and reduced drag < /li > < li > Quick-adjust buckles mounted on the skirt < /li > < li > Tempered glass lens < /li > < li > Easy access for equalizing pressure < /li > < /ul >