At 290 grams, the shoes are very light. They are also shock absorbent without being too padded in the inside. You get good space at the toes but also a kind of firmness that reassures you that the shoe won’t fall off. With this space at the toes also comes flexibility, so if you are going to use the shoes for some jumping exercises, you’re good to go. A slight problem may be the length of the laces but that’s just a minor flaw.
It is a sturdy but amazingly flexible shoe that looks good and suits CrossFit athletes perfectly. Even though it fits okay, there is some space at the toes that will require you to lace up really tight if you have a narrow foot.
Reebok CrossFit Nano 4.0
First and foremost, the new design—a total upgrade from the 3.0. That is, if you like colors. Other than that, there is not much change from the CrossFit Nano 3.0.
The toe box of the 4.0 is a little different, though. It has a rubber mesh on it that provides extra support and protection to the shoe. The laces of the 4.0 are flat, unlike the round ones of the 3.0.
The 4.0 is very durable; they will get you through running, rope and rock climbing, etc.
A downside of the 4.0 is that though it fits well, it gets overly tight when you exert too much pressure—like when you start sprinting. This tightness comes mostly at the toes where the mesh is.
For your everyday workouts and various other strenuous exercises, the 3.0 seems to be the ideal shoe, considering it does not fit as tightly as the 4.0 does. The 4.0 has some small improvements on the 3.0, there are some who would much rather have the 3.0 just because of the way it feels.
The Reebok CrossFit 3.0 is really good. It costs $30 less than the 4.0. Which is the better value for money is up for debate, however, with the 3.0, at least you are guaranteed comfort.