Men's Flex 2013 running shoes from Nike enhances natural motion with full length grooves in its thick rubber sole, which also provides excellent traction and durability. A combination mesh upper and cutouts offer breathability and comfort, whilst a Phylite midsole provides durability and reduces the shoe's weight for a lightweight feel. - R.K.

• Men's Flex 2013 running shoes from Nike
• Full inner sleeve construction wraps around the entire foot for a snug, comfortable fit and feel
• Lightweight sandwich mesh and cutout midfoot overlay for breathability and comfort
• Phylite midsole for a resilient ride and enough durability to double as an outsole
• Phylon core for a lightweight, comfortable ride
• Environmentally preferred rubber and strategically placed segments of solid rubber for enhanced traction and durability in key wear zones
• Moulded EVA sockliner for enhanced comfort and support underfoot