Reebok - Nano X3. Color Cold Grey/Core Black/Gum. On sale for $85.41. MSRP $140.00.. 4.2 out of 5 stars+7Brand NameReebokProduct NameNano X3GenderUnisexColorCold Grey/Core Black/GumPrice$85.41MSRP: $140.00Rating4Rated 4 stars out of 5(349)