Metal plyo boxes are constructed of fully welded steel frames, and the tops are made from reinforced rubber pad with a non-slip surface to maximize safety ,plastic bottom to protect floors and prevent movement ,Wide base and angled construction prevents tipping,Non-slip surface to maximize safety , Stack able for easy storage.
Plyo box Features
-Steel-construction
-Durable with non-skid rubber surface
-Wide, angled, base
-Won't tip over Stackable
Dimensions:
12" Box: Top= 13" x 13"/ Bottom= 15" x 15"
18" Box: Top= 14" x 14"/ Bottom= 18" x 18"
24" Box: Top= 15" x 15"/ Bottom= 21" x 21"
30" Box: Top= 16" x 16"/ Bottom= 23" x 23"
36" Box: Top= 20" x 20"/ Bottom= 28" x 28"
42" Box: Top= 22" x 22"/ Bottom= 32" x 32"

Jumping on and off boxes is one of the best plyo metric exercises to improve leg power, speed and strength.
To see all the deluxe steel plyo boxes that are available.
Plyo metrics is an exercise designed to improve an athletes ability and skill as well as increase speed and strength by unique training and exercises programs. Without question plyo metrics offers the mechanism by which an athlete can start quicker, accelerate faster, change direction more quickly. It also helps minimize muscle strain and injury. This program takes the athlete from beginning to the advanced. A must for track coaches and other sport coaches as well.