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The Puma Deviate Nitro 4 is a plated daily trainer built for up-tempo miles and speed sessions. Priced at $170, it goes head-to-head with shoes like the Adidas Boston 13 ($160) and Hoka Mach X 3 ($190). The Deviate Nitro 4 features a dual-layer construction, with a soft and bouncy PEBA foam on top, a carbon-infused plate in the middle, and a firmer PEBA blend on the bottom. The upper is lighter and more performance-oriented than in the previous version while still retaining good padding around the heel. Upon step-in, the toebox feels noticeably roomier than before, with increased volume and length. This version is about 10% lighter than its predecessor, though it also loses some stack height and now sits around 38mm in the heel. On the run, the shoe’s standout qualities truly shine. It combines the smooth ride of the v3 with the peppiness of the v2, resulting in a more refined take on the beloved Deviate Nitro 2. It feels smoother, more protective, and more cohesive, while still delivering the energetic, lively ride that made the v2 so enjoyable. Overall, the Deviate Nitro 4 is comfortable, easy to run in, airy, bouncy, and genuinely fun. It excels at up-tempo daily miles while still offering the speed needed for workouts and faster sessions. This is a fantastic option for high-mileage runners looking for a comfortable, enjoyable shoe for faster daily training and speed work without an aggressive geometry or plate feel.