Nike Shox Gravity Metallic Silver Gym Blue White Men Running Shoes AR1999-046 - Shipped with USPS Priority Mail. Model Number: AR1999-046 Condition: Brand New Without Box Get the unmistakable look and feel of Nike Shox with Nike Shox Gravity. Add some spring to your step with a shoe featuring flywire cables, new lacing system, and twin plates with foam cushioning under the heel. The mesh upper provides you with superior breathability and flexibility, and the flex grooves in the o