This 2-Window Scuba & Snorkeling Mask is a GREAT durable mask. Great for scuba diving and snorkeling. Quality Construction Fits Medium to Large Faces 2-window design with small upper joint for bright and clear view Crystal silicone skirt with low volume Dual tempered glass lenses Quick-adjust strap buckle Soft pliable yet durable silicon skirt for comfort Soft nose for easy equalizing Stylish Look with Solid BLACK skirt