BUILT WITH THE NEW IDF TECHNOLOGY INTEGRATED DUAL FRAME. U.S PAT.6272693 B1.
This mask has a particular tapered structure patented: IDF-INTEGRATED DUAL FRAME TECHNOLOGY SYSTEM. NANO enjoys technical advantages that Cressi has been incorporating in recent seasons in various models. IDF-INTEGRATED DUAL FRAME TECHNOLOGY SYSTEM
The glass/face distance has been reduced. Inclined glass.
The buckles anchored in the frame for optimum mask stability.
This type of anchorage also improves the stability of the mask.