Product 1: Fits tube with outer diameter 51-52mm
Product 1: Friction fit over objective lens tubes
Product 1: Easily removable
Product 1: Protects lenses from dust/dirt
Product 2: Protects eye lenses from rain, dust and dirt
Product 2: Universal plastic one-piece binocular fit
Product 2: internal diameter to 43mm
Product 2: Attaches to lanyard for extra security