The Nike Epic React Flyknit running shoe was designed to keep you comfortable as long as you can run. Packed with innovative technology from Nike, the Epic React underwent 17,000 miles of testing with elite and everyday runners globally before it was deemed worthy of the shelves. This shoe combines incredibly responsive cushioning, a hug-like feel, and lightweight comfort with performance. The Flyknit upper with its bootie-style construction conforms to the shape of your foot creating a hug-like feel while the tongue is seamlessly part of the upper to avoid hot spots. This, combined with the synthetic suede heel lining, helps prevent blisters so you can rack up the miles in comfort. As you run, the innovative Nike React cushioning responds to the impact of each step by snapping back for high energy return. This foam is also highly durable with testers reporting the cushioning still feels like new after logging roughly 300 miles. Essentially, the Flyknit upper with the Nike React cushioning give you the feeling of wearing slippers on a mattress.