Titin is a weighted work-out shirt designed to give athletes an edge in their training. The shirt is form-fitting and made of synthetic materials, similar to an Under Armor shirt. The real innovation is that weighted plates can be placed in the shirt to increase resistance and make workouts more intense. The shirt is essentially a more advanced alternative to a weighted vest. The entrepreneurs claim that training with the shirt can help you jump higher and run faster. In addition, the weighted plates can be chilled or heated to soothe sore muscles post-workout. After tough negotiations, Daymond agreed to invest in Titin.