Underwear Expert is a men's underwear subscription service that uses proprietary sizing technology to send the best fitting, best feeling underwear to customers. Members fill out a short style quiz with their preferences and Underwear Expert curates their box using 50 brands from around the world that have been hand selected based on quality and fit. Each box is fully customizable and changeable at any time. Subscriptions are 1, 2 or 3 pairs, can include socks if desired. DEAL: Get 50% off your first month of 2+ pairs using this link.