We guarantee your satisfaction. If you are unhappy with the quality, fit or with the AquacolorÒ BimonocularÒ dive experience on living coral reefs (e.g. if you feel the ads or pictures or website information have promised more than the masks can deliver), return the mask ‘return receipt requested’ within 60 days of purchase date in perfect condition in its original box with a copy of your credit card company charge slip and a brief explanation of where and how deep you were diving, time of day, the problem, a phone number where we can talk to you and we will issue a credit for all but the shipping and handling charge. Instructions for returns are included with every mask purchased through this website or by ordering at 1-800-298-0160.