Kenko Lens Protector, PRO1D Lotus Protector, Water-proof, Low-Profile,

Lens protector that repels water like a lotus leaf

Lotus leaves repel water droplets like beads, keeping them clean at all times. ”PRO1D Lotus”, named after the lotus, is a new filter series with high water and oil repellency that strongly repels water and oil.
The metal frame has a hard anodized finish, and the glass retainer spring has been treated to resist corrosion.