Mary Joyce-Proof Sunglasses?

Mary Joyce is rough on sunglasses, as in she likes to break off the earpieces, so they are no longer wearable, but then she constantly asks for her glasses. Her first pair lasted awhile until she got bored in her car seat one day. She had a pair that came from the clearance bin at Gymboree that actually lasted quite awhile because the earpieces were rubber instead of hard plastic. It took her awhile to break those. The most recent pair lasted from the mall back to the highway. At that point, I said, "That's it. No more sunglasses unless I find the perfect pair." Yesterday, I seem to have found a relatively Mary Joyce-proof pair. There are no plastic earpieces. They have an elastic strap that goes around her head and fastens with velcro. They came from Wally-World and cost a grand total of $2.86. So-far, so good... We'll see how long they last...