Check the listing for details. TUSA Freedom HD Mask. Condition: New. Listed at 99.00 USD. The Freedom HD mask is the latest design to come from Freedom Technology. It is a single lens masks with an incredibly wide field of vision. This mask boasts a 180° Rotational Buckle System, which allows it to fit a variety of face sizes while maintaining a low profile. FREEDOM TECHNOLOGYFreedom Technology is a set of technologies to enhance fit and performance exclusive to TUSA. Freedom model masks feature a dimpled skirt surface with varied silicone thicknesses and stability ridges in addition to a proprietary low-friction skirt surface on the fitting line 180 BUCKLE SYSTEMThe buckle rotates a full 180 degrees to accommodate varying head sizes for optimum fit. The thin frame and rotation of the buckle allow the mask to be folded into a compact size. 3D MASK STRAPTUSA’s patented 3D Strap is a true three-dimensional design that snugly fits against the head’s natural curvature. The 3D strap offers unprecedented comfort and fit, unlike standard flat mask straps. PANORAMIC VIEWPanoramic View masks feature a variety of designs offering an incredibly wide field-of-view. Several designs incorporate minimum frame volumes, domed side-windows, reduced frame structures as well as three and four window styles for maximum vision QUICK-ADJUST BUCKLE SYSTEMThe Quick-Adjust Buckle System incorporates a newly-designed low-profile buckle. The result is a compact, lightweight, technologically advanced mask design that can be easily and quickly adjusted for a perfect fit ROUND EDGE SKIRTTUSA's Round Edge Skirt features a proprietary round edge cross-sectionally shaped skirt. This rounded edge results in a soft fit that suppresses pressure and reduces creasing left on the face. The "planar fit, instead of linear fit" silicone skirt maintains great fit and unprecedented comfort FEATURES> Incredibly wide field of view> 180 degrees Rotational Buckle System> Large frame with minimal internal volume> Five-position strap angle adjuster for micro-adjustment> Round-edge skirt> 3-D mask strap