The Defender was designed to protect the front element of your lens from dirt, moisture, and minor collisions. Compatible with most pro-level lenses on the market, the Defender's dual-density construction combines a hard, rigid lens plate, and an easy to install flexible polymer exterior; ensuring a snug and secure fit compared to standard plastic lens caps and flimsy universal lens covers.Protective lens cap for 67 mm-72 mm lensesDesigned to protect the front element of your lens from dirt, moisture, and minor collisionsThe Defender was designed to protect the front element of your lens from dirt, moisture, and minor collisionsPolarpro Defender Lens Cap - 67mm-72mm