Reebok - Nano X4. Color Hyper Green/Black/Vector Red. On sale for $139.95. MSRP $150.00.. 3.9 out of 5 stars+8Brand NameReebokProduct NameNano X4GenderUnisexColorHyper Green/Black/Vector RedPrice$139.95MSRP: $150.00Rating4Rated 4 stars out of 5(137)