The ASICS Novablast 5 shoes' midsole and outsole geometry help produce an energized ride. Their tongue wing construction in the polyester upper helps improve the fit while reducing tongue movement. These running shoes are made of a rubber insole and polyester lining. At least 75% of the shoe's main upper material is made with recycled materials to reduce waste and carbon emissions while the sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology. The FF BLAST MAX cushioning helps create softer landings and more energized toe-off during your training. These lace-up shoes are complemented with an engineered jacquard upper that offers more stretch, ventilation, and durability. Heel pull loop. Round toe design. AHAR LO outsole rubber helps create better traction, improved softness, and advanced durability.