The NOVABLAST™ 4 TR running shoe features a bouncy underfoot feel with a high energy return. It's designed with a trail-specific outsole that's functional for running on off-road surfaces. A tongue wing construction in the upper helps improve the fit while reducing tongue movement. This component is reinforced with a supportive heel design to help guide the foot with more control through your gait cycle. FF BLAST™ PLUS ECO cushioning is made with 20% recycled bio-based content. This material helps create softer landings and a more energized toe-off during your training. Tech & Materials • Engineered woven upper provides good comfort and support while keeping feet cool • Gusseted tongue wing fit system improves the midfoot fit and reduces tongue sliding • FF BLAST™ PLUS ECO cushioning is made with approximately 20% bio-based content and helps provide cloud-like comfort • Trampoline-inspired outsole design provides a more responsive bounce back • AHAR™ outsole improves durability • At least 75% of the shoe’s main upper material is made with recycled materials to reduce waste and carbon emissions • 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 • Trail-specific outsole helps provide off-road traction Asics Novablast 4 TR