Reebok - Nano X3. Color Cold Grey/Core Black/Gum. On sale for $86.40. MSRP $140.00.. 4.1 out of 5 stars+7Brand NameReebokProduct NameNano X3GenderUnisexColorCold Grey/Core Black/GumPrice$86.40MSRP: $140.00Rating4Rated 4 stars out of 5(329)