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The little pink slipper is so dainty that 4 inches reads as the perfect balance of cute and visible on my backpack. The metal ring feels sturdy enough to survive daily jingling, and I love that it's lead and nickel compliant since I'm allergic to most cheap metals.

Fits right on my keyring without adding bulk, and the pink satin slipper has held up well after a month of being tossed in my bag. The metal ring is sturdy enough for daily use, though the 4-inch length makes it dangle a bit more than I'd like.

The pink satin shoe is cute enough, and the metal ring feels sturdy, but at 4 inches it's bulkier than I expected for a keychain. It works fine clipped to my bag, just not something I'd grab if I wanted something discreet.