The cork case is perfect for transporting solid shampoo or solid conditioner. It is 100% natural and biodegradable. Made responsibly in Spain, it is made of natural cork. -Natural and biodegradable, cork comes from the bark of cork oak. -Durable and waterproof, it is easy to clean with water and will keep your solid care dry -Practical and elegant, it allows solid cosmetics to be carried easily while maintaining an elegant design.