Clear frame glasses suitable for everyday baths, hot spring inns, public baths, saunas, bathing, and caregiving. Heat resistant up to 120°C. I am selling these because the prescription feels slightly off for me, as I usually wear -4.75. I have only tried them on. Prescription: -4.00 Approximate visual acuity: Approximately 0.04 to 0.1 For those who usually wear glasses or contacts with a prescription of -4.00 to -4.75 ■ Size: Lens width 54mm / Bridge width 17mm / Temple width 140mm ■ Contents: Glasses本体 / Original plastic case / Anti-fog sheet ■ Rust-resistant, fog-resistant, and heat-resistant even when wet. Allows you to enjoy baths and saunas "safely and securely." Prescription lenses are heat and corrosion resistant. Eliminates the problem of not being able to see during bathing. ■ Flexible and deformation-resistant material / Frame design suitable for Japanese noses ■ Anti-fog coating makes the lenses less likely to fog up in baths and saunas / Using the included anti-fog sheet will restore the anti-fog coating that has worn off.