Adidas Supernova Prima 2 vs Hoka Skyflow:
Which to Choose

Start with the specs, because this is where the two genuinely diverge. Both are roughly 10 oz (around 283g) in a men's sample, so neither is meaningfully lighter — these are substantial, protective trainers, not uptempo shoes. Stack heights are close but tell different stories: the Skyflow sits at about 40mm heel / 35mm forefoot for a low 5mm drop, while the Prima 2 is about 39mm heel / 31mm forefoot for a more traditional 8mm drop. That 3mm drop gap is the single most important difference you'll feel. The Prima 2's higher offset keeps more foam and a more pronounced heel under the rearfoot, which flatters heel-strikers and anyone who finds lower-drop shoes nag the calves and Achilles on long runs. The Skyflow's lower, flatter platform, combined with Hoka's early-stage MetaRocker, encourages a smooth roll through the midfoot and a quicker tip toward toe-off. The foams differ in kind, not just amount: the Prima 2 uses Adidas Boost, a TPU-based foam that delivers a dense, durable, lively-but-controlled rebound, and it's steadied by Dreamstrings TPU cords wrapping the foot rather than a medial post. The Skyflow runs on a modern supercritical foam that feels lighter and plusher underfoot with a slightly springier, above-average rebound, framed by Hoka's wide, heel-cradling geometry for stability. In practice the Boost ride feels planted and settled with a controlled bounce, while the Skyflow feels softer and smoother with more of a rolling push. Both hold a wide, calm base and steady the stride without corrective posting, and both get vague the moment you try to truly open up — the Prima 2 is willing down to roughly 4:45–5:00 min/km, the Skyflow holds together to about 5:00 min/km before the soft foam starts to feel like it's holding you back. Neither is a tempo or 5K tool; the Prima 2 is a touch more willing to lift the pace, the Skyflow a touch plusher and more forgiving at genuinely easy efforts.