Like a high-tech bean bag for your foot, this Nike Joyride running shoe is crazy different than anything else. Tiny foam beads underfoot provide cushioning that conforms to your every step for comfort that stands up to your mileage. Nike Joyride Run 4Pod features: Flyknit lightweight breathable material hugs your foot and keeps it in place. Synthetic material wraps from the inside of your foot to the top for a secure fit. Durable rubber on the outside in high-wear zones. Raised nobs add traction. Tiny foam beads in four strategically placed pockets underfoot compress in every step. One-piece foam collar cushions smoothly and securely. Low-cut design feels comfortable around your ankle and allows easy on/off. React carrier foam is super lightweight and durable.