Levi's 510 has decades of heritage. The Anom 360 has 4-way stretch and a "feels like sweatpants" promise. We put both pairs head-to-head across fit, stretch, durability, and price — wearing each for 30 days straight. Here's the honest breakdown of where each one wins, where each one falls flat, and which skinny jean actually deserves a spot in your rotation in 2026.