Sooley is a startup that specializes in creating custom 3D printed insoles to alleviate foot pain and enhance athletic performance. The company offers a free foot scan via their app, which is used to create insoles tailored to individual foot conditions such as plantar fasciitis, flat feet, overpronation, and leg length differences. The insoles are co-developed by doctors and orthopedic specialists, and the company provides personalized video advice to customers.