There are plenty of counterfeit Spigen products these days. Honestly, I don’t know how to spot real and fake ones. I’d say just buy from a reputable seller/distributor here in the Philippines. Jeff bought his Spigen case for his iPhone 5 at Applewerkz in Alabang for Php 1,450. If you like simple cases for your iPhone 5, check out the Ultra Thin Air, it’s very slim and minimalist.
The Ultra Thin Air hard case for iPhone 5 is made of polycarbonate material. The case is form-fitted and original cases fits perfectly on the phone including the holes for the buttons. Counterfeit Spigen cases however, are made of crisp plastic and does not fit well. Some colors are also not the same with the original colors in their website.
Spigen also included an original authentication number on their products, to be 100% sure of the authenticity of your product, go here and enter the Manufacture Product Number (MPN) found on the Spigen packaging.