Many of the Ice bears (cherry, lemonade, orange, grape, lime, berry) have sunglasses that have a weird film that makes them look dull or even greasy in some lighting.
The fix is simple.
Undu, alcohol or dawn detergent. My preference is alcohol. Get a rag wet with the alcohol & rub the outside of the glasses. Buff dry with the rag. Repeat a few times and the glasses look great!
There are many Ty Beanie babies with sunglasses in the Summer Theme list.