I’m nearsighted and found This place by accident 6 days before my flight to Mexico. I purchased the mask with my prescription and paid for one day shipping. It arrived in two ,fedex fault. For the first time in my life I could see the ocean floor clearly. The resort we stayed at had turtles, stingrays, and a reef on the resort. The mask worked great and I couldn’t be happier. Going to buy my daughter a mask as well. Just amazing service.