The sunglasses case is made from EVA, it is a synthetic material. It can protect your lenses from scratches and its arms from bending and breaking. The soft lining is also great for protecting your lenses from dirt and residue. It is both semi-hard and very sturdy. A carabiner-style key-chain clip conveniently attaches the glasses case to your handbag,backpack or tote bag to carry your reading glasses, goggles or any other eye wear. In addition to its main use, it is also a multipurpose storage tool for small electronics, accessories, or other small items. This product is fit for most standard sized glasses, sunglasses, computer glasses and many more. Ultra lightweight that adds minimum bulk and weight while on the go or carrying around.