"I was amazed at the ease of use of this lens cap. It literally snaps RIGHT ON to the end of my camera lens, and also stays put when I move my hand away. I have to physically remove the lens cap with my hand to get it off! Protects my lens flawlessly. Terrific!"

— Amazon.com: Review for Canon 58mm Snap-On Lens Cap

Also from the forthcoming book It Did What It’s Supposed To Do!: David J. Ciesinski Shows YOU How to Boost Your Happiness EFFORTLESSLY!.