What Our Gearhead Experts Are Saying:“I use the Prime X3 Strung for my biggest training blocks—long runs and uptempo efforts. The 50mm stack of Lightstrike Pro gives a ton of cushion without losing energy return, and the ENERGYRODS really keep the ride springy and responsive. It feels like a race day shoe that can handle weekly mileage."We don't hold back when chasing peak fitness, and neither does the adidas Adizero Prime X3 Strung Running Shoe. With a 50mm stack height, this ultra-plush super trainer cushions every stride during long runs while delivering propulsive energy return to stay fresh for tomorrow's session. The 3-layer Lightstrike Pro midsole and ENERGYRODS 2. 0 combine to create a ride that feels both stable and dynamic, pushing us forward with each toe-off. Engineered for high-mileage training, the STRUNG upper locks in support where we need it most while flexing across the forefoot to keep us moving freely. Whether we're logging steady efforts on the road or pushing pace on race-prep runs, the Prime X3 offers premium comfort and an aggressive feel with no compromise.