Only listings marked as "Sold by Amazon.com" , Zappos , or Sunglass Hut are authorized .

Well-known names include Sunglass Hut , Nordstrom , and REI .

To ensure authenticity and maintain your , you should stick to these verified channels:

MauiJim.com offers the full catalog, including non-prescription sunglasses and readers . Note that they do not sell prescription frames directly; those must go through an authorized optician .