Costa Del Mar Accessory Costa Del Mar Costa Keeper Sunglass 。Costa Dry Case and Costa Del Mar Lanyard/Keeper - Unisex Designed for outdoor and water activities. Product Information: Costa Dry Case - A water-resistant, hard-shell case with an interior rubber liner and pressure valve to keep items safe and dry. Suitable for storing keys, a wallet, most cell phones, or sunglasses during travel and outdoor use. Costa Del Mar Lanyard - A strap designed to keep your sunglasses secure around your neck or attached to other gear. Prevents loss of sunglasses during activity. Pre-owned condition *Please see photos for items condition and details.