i bought these as a cheap pair of sunglasses to take with me on vacation, to concerts or for work when i usually have to put on and take off frequently.  There are some events and places where sunglasses are needed and the potential for damage or loss is great and i definitely do not want to lose another $300 pair of Maui Jims so i take these instead and if i do break or lose then i am happy to take the $8 hit.  They are a great "beater" pair of sunglasses