If different strength lenses are needed on left and right side select MIXED STRENGTHS and send email to info@101snorkel.com with request.****************************Case colors are Pink, Purple, Grey or Black. Colors will be sent as random.If a select color is needed send email.*****************************Smoke(black\gray) Goggles*****************************This High Quality RX Optical Prescription Swim Goggles by View are completely assembled by 101snorkel for you!*****************************Super anti-fog treatment - 100% U.V. protection*************************3 Nose bridges - Medium Size is installed**********************Free Goggle/Eyeglass Case (Assorted Colors)