Universal no leak fit extremely comfortable goggle that is fully adjustable offers an excellent option for swimmers who need a corrective goggle Straps Have push button on side for easy adjustment Comes with 3 Bridges in order to adjust fit. Swim goggles will fit Kids, Teens and Adults Anti-fog, UV- Protection Hard Carry case Professional Swimming Goggles: If you have little difference between 2 eyes, like +4.0 and +4.5, you can choose a pair of +4.0 or If you have big difference between your 2 eyes, like +2.0 and +6.0, you can buy 2 pairs and assemble them. Or message us and we will esemble them for you To figure out your best diopter follow this calculation 1/2 Cylinder + Sphere = your diopter Universal no leak fit extremely comfortable goggle that is fully adjustable offers an excellent option for swimmers who need a corrective goggle Comes with 3 Bridges in order to adjust fit. Swim goggles will fit Kids, Teens and Adults