halo 4dThe adidas 4D FWD 2 uses an angled lattice midsole, 3D printed to provide the ultimate in support, cushioning and propulsion. As the midsole compresses forwardTwo different lasers are combined in the HALO 4D. The Halo ® fractional laser delivers two different wavelengths, 1470-nm and 2940-nm simultaneously. The Dynamis Fotona 4D ® uses