These online fashion stores also guarantee your complete protection, security, and privacy when shopping online, and completely adhere to FBI security guidelines. They also have a good reputation with consumers, so your online shopping experience will be easy, discreet, stress-free, and enjoyable. Eyes of Texas has some nice tips on this. Most of these online retailers will provide you with a one-year warranty and will deliver your sunglasses or other eyewear to your home or office on time and at a fair price. Every pair of glasses comes with a certificate of authenticity, a native protective case, and a micro-cleaning cloth for the lenses. Every item is guaranteed to be genuine, and you can exchange any product you purchased within 7 days for any reason. Furthermore, if you are dissatisfied with your purchase, they can refund your money in full as long as the glasses are not worn and the lenses are not scratched. These online stores often provide personalised designer eyewear at a low price, with assured prompt delivery and outstanding customer service. There are two styles of eyewear: those that are designed to support the eyes and those that are designed to protect the eyes. Prescription lenses are specifically designed to benefit the eyes. Progressive lenses are used in most prescription glasses, and they assist in maintaining continuous and uninterrupted vision over a certain span. Others have darkened lenses that are designed to shield the eyes from the glare of sunlight. UV-protected polycarbonate lenses are included. Plastic lenses are used in certain glasses because they are less expensive, lighter, and more durable. Despite the fact that all of these styles of eyewear are available in the market for a much lower price, most consumers still choose to get designer eyewear rather than the less expensive alternative. What factors contribute to the high cost of designer eyewear? An example of high-end designer eyewear is the Airman 2002 Titanium.