Pros

  • Exceptional comfort right out of the box and after extended use, with many reviewers noting they feel significantly better than other running shoes they've tried
  • Excellent material quality and superior construction throughout the shoe, with structural integrity maintained even after months of heavy daily wear
  • Ideal balance of cushioning and sole firmness—the FuelCell foam provides responsive support without being overly soft
  • Minimal heeo-forefoot drop creates a natural, grounded feel that avoids the awkward downhill sensation of higher-drop shoes
  • Effectively alleviates foot pain, with reviewers reporting relief from plantar fasciitis within a month of regular wear
  • Outstanding fit and versatility—works equally well for casual wear, alay comfort, and active use
  • Lightweight design paired with excellent stability and reliable performance across multiple pairs
  • Requires minimal breakinn, achieving full comfort within just a couple of days
  • Made in the USA with 70% domestic value, appealing to those who prioritize American manufacturing

Cons

  • Midsole softens and becomes spongy over time, reducing the firmness and stability that made earlier v5 versions superior for lonerm support
  • FuelCell foam redesign prioritizes softness over the firm platform that lonime 990 users prefer, resulting in reduced ground feedback and resilience after extended use
  • Sizing runs large—most reviewers recommend ordering a half to full size down, which adds friction to the buying process
  • Insoles are surprisingly minimal and may require replacement to achieve optimal comfort and support
  • Not ideal for those with balance issues or peripheral neuropathy, given the reduced firmness compared to previous versions
  • Better suited for casual wear than for those who need maximum stability and support during rigorous activities

Bottom Line

The 990v6 is an exceptionally comfortable shoe that excels at everyday wear and provides genuine relief for common foot issues like plantar fasciitis. However, if you're a longtime 990 devotee who valued the firm, stable platform of the v5, you'll likely notice the softer FuelCell foam feels like a step backward—the midsole loses resilience over time, and the shoe trades stability for plush cushioning. Be prepared to size down by about a full size, and keep in mind this is better suited for casual, everyday wear rather than serious athletic pursuits. If maximum long-term stability and support are priorities, you might want to consider whether the v5 remains the better choice for your needs.

Get ShopSavvy
ShopSavvy is totally free and works on all popular phones and browsers
Download ShopSavvy App

Compare prices for anything in real-time, set price alerts, watch for deals by keyword, and much more

Install ShopSavvy Browser Extension

Compare and track prices automatically while you shop online at thousands of websites.

© 2026 Monolith Technologies, Inc. All rights reserved..