This will save your glass.
If you’re heading out of town and not taking your usual, bursting-at-the-seams camera bag, or if you just stuff a couple accessories in a purse, this cheap trick will be of interest to you.
Available new for next to nothing and even less at garage sales and some thrift stores, the venerable Can Cozy, that ⅜-inch thick foam rubber wrap designed to keep your beer or soda cold longer, serves double duty when loaded with a lens. It offers an extra layer of protection for your glass or anything else that you can fit into it.
This is a great way to protect smaller lens barrels from nicks and abrasions without having to segregate each unit in its own space in a contemporary camera bag.
A lens cozy provides low-cost lens insurance for your glass.