The ball is part of HEAD's Tennis Instruction Program (T

Cushioning: PWRRUN PB

The twist is prefabricated in a way that is easy to twist and untwist many times over

Mirage™ tippet material

Endorphin Shift 2 Mens Size:UK7.5/US8.5 The ball is part ofUSA TO UK SIZE CONVERSION CHART Feel good cushioning and speed. The Endorphin Shift 2 is the definition of effortless performance. It mixes a lofty bed of PWRRUN cushioning with propulsive SPEEDROLL Technology, so you get more comfort and speed out of each stride. And with its stable platform and touch of guidance, you can count on lots of feel good miles, every day of the week. Whats new? Snugger fit with a trim new heel counter, more breathable