At a glance:

Gravity Defyer Technologies:
• The SPD Reciprocal shock absorber system: Three coil spring system with polymer housing.
• AVS³ - Air Ventilation Step Strike System: circulates air throughout the shoe.
• Perfect-Fit Insole: Vented width adjustment layer made of anti microbial poly urethane (removable)
• Comfort-Fit Insole: Soft cushioned layer vented to interact with the Perfect-Fit Insole and AVS³ - Air Ventilation Step Strike System. It is made of anti microbial poly urethane (removable) and accommodates most orthotics.

Construction
• Synthetic leather and AIR BREEZE padded mesh upper EVA mid-sole and rubber out-sole.
• Roomy toe box for comfort
• Memory Metal Spring Made in USA.
• Sole material made in Japan.
• Manufactured and assembled in China.

Introducing the first walking shoe constructed with durable Gravity Defyer technology. Constructed of sturdy black synthetic leather they have extra toe room and plenty of ventilation. They're perfectly designed for walking, hiking, or even an afternoon running errands. Whatever you need to do you'll do it longer and with less fatigue compared with regular shoes. Once you feel the unparalleled cushioning of the MXT-S1 sole, you'll be amazed at what more you can do.Intended for those who are looking for a harder work-out, the G-Defy will keep you on your feet longer than any other shoe. The three "smart-memory springs" of the exclusive SPD-X sole technology are concealed in the specially-engineered athletic sole. The primary shock absorber absorbs undesirable impact and propels you forward aleviating fatigue and energizing every step. Two secondary springs serve as stabilizers to support the primary spring and reduce yaw in the footware. The springs actually learn the way you walk and react to your unique stride. This high-end sports shoe is a re-envisioning of the Original GD as an athletic shoe. These have a greater flexibility than the Catapults and reduces stress during physical activity.

The shoe contains the AVS³ technology, or Air Ventilation Step Strike System, our cooling system. You'll feel cool and fresh with every step as the pumping action of the SPD-X sole draws air away from the footbed and expells it though a one way valve. No more hot, sticky, smelly feet. The AVS³ system will help to reduce your shoes internal temperature and reduce microbial growth. Also included is a padded, removable insole to accomodate any specialty orthotics you might use. Selected models feature the exclusive "Perfect Fit Insole," allowing the wearer to adjust the width and length of the shoe. This is ideal to aid those with bunions or other foot problems to walk in greater comfort. There is a wider heel and 20% stronger springs than the other shoes - which means less rebounding in normal walking, but greater rebounding when greater force is applied. These are perfect for people who want to push themselves a little harder, all the while still enjoying all the protection a Gravity Defyer shoe can bring.