Skechers Hot Melt & Mesh Fashion Sneaker Runners Womens. An iconic classic gets a fresh update in Skechers Street™ UNO Flex - Spring On Air. This lace-up fashion sneaker features a mesh and synthetic upper, a Skechers Memory Foam® insole, and a Skech-Air® visible airbag midsole. Skechers Women's UNO Flex - Spring On Air Sneaker in Black, Size 7 | Synthetic/Textile, Vegan