The world is divided into two parts: those who wear sunglasses and those who don’t. Of the people who wear sunglasses, there are those who take care of their sunglasses, and those who habitually break or lose them. Regardless of which group you belong to, you should always have a good sunglasses case handy, like the Makr Eyewear Sleeve ($90). Its made from Horween leather with an antique brass button stud arm keeper. Keep your shades scratch-free.
More than likely your eyeglass case needs an upgrade. Based off a mid-60’s US Military standard issue, the Tanner Goods Eyeglass Case ($70) is much better than a drug-store stand-in that will fall apart after a year. Each case is made of 3/4 oz vegetable dyed English Bridle leather and hand-stamped with the model number. And if you are upgrading your case, you might as well get some Warby Parker Specs to go in it.