Reebok - Nano X3. Color Cold Grey/Core Black/Gum. On sale for $89.97. MSRP $140.00.. 4.1 out of 5 stars+7Brand NameReebokProduct NameNano X3GenderUnisexColorCold Grey/Core Black/GumPrice$89.97MSRP: $140.00Rating4Rated 4 stars out of 5(327)