Asics Men's NOVABLAST 4 Running Shoe features a new midsole and outsole geometry that helps produce an energized ride. A tongue wing construction in the upper helps improve the fit while reducing tongue movement. It's complemented with an engineered woven upper that offers more stretch, ventilation and durability. FF BLAST PLUS ECO cushioning is made with 20 percent recycled bio-based content. This material helps create softer landings and a more energized toe-off during your training. The sock liner is produced with the solution dyeing process that reduces water usage by approximately 33 percent and carbon emissions by approximately 45 percent compared to the conventional dyeing technology. It comes in 45 EU size and 300 illuminate green/lime burst color.