Wave Inspire 21 vs ForeverRun Nitro 2

The Wave Inspire 21 is Mizuno's dependable stability running shoe, built for runners who want gentle support without a corrective, medical feel. This is a daily training shoe first and foremost: high 12mm drop, a firm and planted ride, and enough structure to keep a mild overpronator honest over the miles. At around 295g it is not light, and it never pretends to be fast. What it does well is turn up every day and hold its shape, which is exactly what a lot of runners want from their main trainer. In our view it sits in the same conversation as the Asics GT-2000 14 and the Brooks Adrenaline GTS 25: honest, supportive daily miles rather than plush luxury or race-day pop. If you overpronate a little and want a shoe that just works, it earns its place. Runners chasing a soft, bouncy ride should look elsewhere.

The ForeverRun Nitro 2 is Puma's answer to the modern stability question: hold your foot steady without a hard medial post, and cushion it enough to still feel good at the end of a long run. It is a road stability trainer built for higher mileage, with a 38mm heel and 28mm forefoot giving you a genuinely deep, protective platform and a traditional 10mm drop that most heel-strikers will settle into fast. The support comes from a wider, structured build and Puma's RunGuide sidewalls rather than a firm post, so it guides rather than corrects. At 295g it is not light, and you feel that. This is a shoe for steady, controlled miles, not a shoe you will want to pick up the pace in. If you overpronate mildly or just want a stable, cushioned daily workhorse that stays composed when you are tired, it earns its place. If you are chasing lighter, springier stability, look at the newer wave of soft-support trainers instead. It replaces the ForeverRun Nitro 1 and keeps the same job description.