Reebok - Nano X3. Color Cold Grey/Core Black/Gum. On sale for $105.00. MSRP $140.00.. 4.1 out of 5 stars+8Brand NameReebokProduct NameNano X3ColorCold Grey/Core Black/GumPrice$105.00MSRP: $140.00Rating4Rated 4 stars out of 5(326)