What to know

• The LeBron XXI evolves the low-cut profile of the LeBron XX with premium lightweight materials modeled after the properties of an oyster shell. The shoe is built to serve the next generation and is inspired by LeBron’s daughter, Zhuri.

• Underfoot, the shoe features a Zoom Turbo unit in the forefoot; a bottom-loaded, 13-millimeter Zoom unit in the heel; and a full-length Cushlon 2.0 foam carrier.

Using lightweight materials, the upper’s venting is striated to look like the veining of a shell, helping contain the player during explosive movements. That containment is visualized by a lightweight mono-mesh reinforced by 360 degrees of zonal cables around the midfoot, helping support and secure the player over the footbed. Perforations on the medial Swoosh provide enhanced breathability. Underfoot, the shoe features a Zoom Turbo unit in the forefoot and a bottom-loaded, 13-millimeter Zoom unit to support propulsion. A full-length Cushlon 2.0 foam carrier for a pillowy feel and a TPU midfoot shank provides stability and extra pop for dynamic movements.

“As we took our next steps from the LeBron XX, we were inspired by the way LeBron maintains his body and his game during the offseason,” says Jason Petrie, Lead Designer for the LeBron XXI. “His trainer says it's like taking care of an F1 car. You tweak the car between each race. You don’t need to rebuild the car completely. We wanted to retain some of the elements we know he loved, like the Zoom Turbo unit, but refine some of the finishes in the upper.”