1. Rep 3 in 1 Wood Plyometric Box for Jump Training and Conditioning 30/24/20 (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
30x24x20 inches - Highest Grade Plywood - 3/4 inch thick. Assembly screws are included.Perfect for box jumps, step-ups, box squats, and CrossFit workouts

2. j/fit Plyometric Jump Box Set of 4 - 12",18",24",30" (Click Link to Check Price on Amazon)
Editor's Rating : 8.8 out of 10
INDESTRUCTIBLE PLYO BOXES: Our plyo boxes are made from high quality materials so as to last for the many years to come. The heavy duty steel construction guarantees safe and dynamic performances.STABLE RUBBER STOPPERS: Excel your routines but keep your posture safe with our plyometric boxes. The rubber stoppers on the bottom are screwed for optimum safety and will keep boxes from sliding.

3. Wood Plyo Box - 12/14/16 inch 3 in 1 Plyo boxes Plyo-Box, Plyometric Box, Plyometric Jump Box, Plyometric Jump Boxes, Box Jump Boxes, Jump Box (12/14/16) (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
- MAXIMUM EFFORT WITHOUT FEAR: The rounded wood plyo box corners guarantee you can put in maximum effort with every jump because you won't get hurt.- DRASTICALLY IMPROVED SPORTS PERFORMANCE: Perform a huge selection of exercises on the plyo jump box drastically improving your jumping ability no matter what your sport.

4. Fuel Pureformance Adjustable Plyometrics Box (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Adjusts to 3 heightsQuick spring button adjustment

5. BOUND Plyo Box (16/20/24) 3 in 1 Wood Puzzle Plyometric Box - Great for CrossFit Training, MMA, or Plyometric Agility - Jump Box, Plyobox, Plyo Box, Plyometric Box, Plyometrics Box (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
Perfect for box jumps, step-ups, box squats, and CrossFit workoutsPlywood - 3/4 inch thick. Assembly screws, glue, and square-drive bit are included.