Subscription boxes are curated packages of products that are delivered to subscribers on a regular basis, such as monthly or quarterly. These boxes often focus on specific themes or interests, such as beauty, food, books, or fitness. Subscribers pay a fee to receive a selection of items, which can include samples, full-sized products, or exclusive items not available in stores. Many companies offer subscription boxes, allowing customers to discover new products without the hassle of shopping. Popular examples include Birchbox for beauty products, Blue Apron for meal kits, and Book of the Month for literature. Each box provides a unique experience tailored to the subscriber's preferences.