The legal warranty applies to all our earplugs. This means that the product must meet all expectations which we promise. This means that the earplugs are at least reusable for 365 days. Also we are very thorough in our designing, production and packaging process. We perform various quality checks during all processes but it could very rarely happen that a product containingh a manufacturing or material defect slips through. In these cases we will ship a new pair of earplugs or offer a 100% money-back qurantee.