3D SYNQ technology with a unique Fitting Ring enables the Mask Skirt to mold to all face shapes providing the ideal fit, seal and underwater experience; Swift Buckle 3D - easy adjustment buckle and strap is silent and effortless when making adjustments; Freedom Technology is a set of technologies to enhance fit and performance exclusive to TUSA; 3D Mask strap offers unprecedented comfort and fit, unlike standard flat mask straps; Round Edge Skirt for a soft fit that suppresses pressure and reduces creasing left on the face; Eco-Friendly mask case is made from recycled material