Our Take 

The Novablast 4 is a lightweight and responsive cushioned shoe with a trampoline like effect in the forefoot that is meant to give an energetic ride for your daily training.    Feedback is that it is one of the best all-around neutral trainers that we have. 

The 4th version of this highly popular model sees small tweaks and a few upgrades, including a new midsole and outsole geometry that helps produce its most energized ride yet.  The midsole also now features FF Blast+ Eco, which offers the same ride as the previous version, but in a more sustainable package.  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.

Specs

• Midsole Drop – 8mm
• Heel Stack – 42mm
• Forefoot Stack – 34mm
• Weight – 9oz

Technology 

• Engineered woven upper offers advanced stretch, ventilation, and durability.
• Tongue wing construction and added stretch helps improve the fit while reducing tongue movement.
• The heel stabilizer helps support the foot and create a more balanced stride.
• FF BLAST™ PLUS ECO cushioning is made with approximately 20% bio-based content and helps provide cloud-like comfort.
• Trampoline-inspired outsole design improves toe-off.
• AHAR® Plus outsole in critical areas 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 conventional dyeing technology.