Case Logic Case The Case Logic Case is a versatile and durable pouch/sleeve designed to protect and carry your portable audio accessories, including headphones. Made of sturdy nylon material in a sleek black color, this case is compatible with various brands and models, making it ideal for users with different devices. With a soft case feature and designed for the 1st generation of portable audio devices, this Case Logic Case is a practical and reliable accessory for keeping your headphones safe and secure while on the go.