Convergence GEL® Technology provides two points of engineered support by replicating the fatty tissue of your foot. Combine that with the new engineered mesh upper for increased breathability and support, the GT-1000™ 5 shoe has the performance and stability of its predecessor with the latest in stability technology, and did we mention it’s 0.5 ounces lighter this year? Weight: 8.8. Heel Height: 21mm. Forefoot Height: 11mm.