The Adizero SL has an 8.6-mm heel-to-toe drop. In the running world, a drop between 8 and 10 mm is often seen as the safest bet for daily trainers. This shoe is on the lower end of that range, so we think it could be a good option if you're not a fan of shoes with a 10-mm drop or higher.

In all, the adidas Adizero Pro 3 has better-than-average traction and durability. I wouldn't take them to a trail race, but they've proved good for road workouts and races.

This ridiculously lightweight running shoe is 33% lighter than Nike's Vaporfly. At 138 grams, it weighs as much as a single D battery, but we also loved its bouncier foam underfoot, which provides great energy return while running long distances.

The pros of this upper were the midfoot security and lighter nature to keep all the weight down. The downfalls were in heel security, comfort, and lower volume in the toe box. David: The Adidas Adizero Boston 12 fits true to size in my Men's 9.5. The fit and feel throughout is certainly driven towards performance.