Asics

Frequently Asked Questions

• How do I choose between the Gel‑Kayano, Novablast 5, and METASPEED™ lines?

  Pick by purpose: Gel‑Kayano is ASICS’ flagship stability trainer built for long distances and pronation control using GEL cushioning, FlyteFoam, and support features; Novablast 5 is a lively, highly cushioned daily trainer that emphasizes bounce and responsiveness with FlyteFoam Blast-like foams; METASPEED™ models are race‑focused, lower‑stack and aerodynamically tuned with carbon‑plate or racing plate technologies for faster tempo and marathon performance. Match the model to your typical run distance, shoe stability needs, and goal (training vs. racing).
• What size should I order for ASICS running shoes like Gel‑Kayano or Novablast 5?

  ASICS generally fits true to size but model-to-model differences mean you should allow a thumb’s width of toe room and consider half sizes if you’re between sizes. Check whether the upper uses FluidFit or engineered mesh (higher-volume uppers fit roomier) and, for racers like METASPEED™, expect a slightly snugger, performance-oriented fit. If you have wide feet, look for wide-specific versions or models noted for roomier toe boxes.
• What do GEL cushioning and FlyteFoam feel like on runs?

  GEL technology provides targeted shock absorption under the heel and forefoot to reduce impact, while FlyteFoam delivers lightweight compression resilience and springy rebound for forward propulsion. Together they balance impact protection with responsiveness so you get cushioning that still supports efficient toe‑off and tempo transitions.
• Which ASICS shoes are best for trail or mixed‑terrain running?

  Choose ASICS’ trail‑specific lines such as GEL‑FUJITRABUCO or GEL‑SONOMA, which pair lugged outsoles and reinforced uppers for grip, rock protection, and durability on uneven surfaces. For mixed road‑to‑trail use, look for models that advertise rock plates, deeper treads, and more robust toe caps—these features improve protection and traction without sacrificing too much road comfort.
• How do ASICS stability features like IGS and Dynamic DuoMax help pronators?

  The Impact Guidance System (IGS) works with midsole geometry to promote a smoother gait cycle, while the Dynamic DuoMax or medial support elements add firmer foam under the arch to limit excessive inward roll. Combined with GEL cushioning and a stable platform (as in the Gel‑Kayano), these systems guide footstrike and reduce strain associated with overpronation without overly restricting natural motion.