Thank you for your interest in this item !
These sunglasses are quite handy. You just need to touch them and use the menu. You can wear them on your nose, on your head or a sidepiece in your mouth.
While in your mouth, can choose either to hold them with one hand or to let them hang.
You can use the "keepdry option" to make it so the glasses automatically fade away when they're about to "get wet" in Linden water or in Ethereallusions primwater products.
You can resize the glasses, modify them, save the new position and rotation you set to adjust them to each spot you're wearing them on.
Last but not least, if you just don't like how these glasses look on your avatar, you can use the content with any other modifiable pair of glasses you own to let it work the same way.
I hope you enjoy !