HiCool Degree Swim Goggle with Different Diopters Custom diopter level designed for swimmers with poor eyesight,12 different diopters fully meet your different needs, you can clearly see something underwater as you take your glasses Soft and durable silicone head strap,Fast fit head strap system,Base on the head size fast mediate to the comfortable position Adjustable nose bridges,Soft and solid silicon nose bridge design, Suitbale for different people, Soft silicone gaskets and frame provide comfortable feeling,Fit your faceproperlyand prevent leakage,UV protection. Antifog lenses Diopters:-1.5, -2.0, -2.5, -3.0, -3.5, -4.0, -4.5, -5.0, -5.5, -6.0, -7.0, -8.0.Package contain A diopter glasses,A fine packing box, A brief paper specification.Offer one-year warranty