Thank you for viewing. Arena prescription swimming goggles, mirror type. Although the prescription strength of the lenses at the time of purchase is unknown, I purchased them to match my eyesight (right 0.01, left 0.03), and the vision was good. They are perfect for those who want to concentrate on training, as it's difficult to see the eyes from the outside. The lenses of this product have a rounded shape (see photo), and personally, I find that a horizontally elongated shape like SWANS fits better, so I am selling them. The lenses & connecting part (lens-lens) have been used about 5 times. The straps have been used for about a year. They will be placed in a bubble wrap bag and shipped via Yu-Packet Post. When viewed from behind while wearing the goggles, the left and right lenses are positioned so that the strap length adjustment adjusters are on top. They can also be used by switching the left and right lenses. #Arena #arena #goggles #swimminggoggles #swimming #pool #prescription #withprescription