Sometimes, people misplace the owner's manual that came with the car, so it's important to find resources where you can either access the same information online or request a new printed copy of that manual.
Fear: Some people are afraid they'll lose the smaller sunglass piece more easily than they would misplace a pair of prescription sunglasses.
It's not uncommon to misplace manuals between the time you first purchase a new appliance and the time you need to look up something about it after you've owned it for a while.
The second category consists of those who frequently misplace their sunglasses, so they can't see spending big bucks on something they might never see again.
It's not unusual to misplace the owner's manual that comes with small appliances between the time of purchase and when you actually need to use them.