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Plyo box guide: picking foam or wood and the right height to start

By the Life in Good Form editors. Updated 2026-10-14.

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Foam or wooden plyo box?

REP's soft boxes use an internal wood structure covered in soft foam and a thick, textured vinyl cover that zips on, and they arrive assembled. Its wooden boxes are 3/4 inch construction-grade plywood with interlocking joints and sanded edges, and take about 20 minutes to assemble. Both lines list a 400 lb weight capacity.

How to choose a plyo box

• Heights you will actually use. A 3-in-1 box gives three heights by turning it onto a different side. REP's large wooden box, 20 by 24 by 30 inches, offers 20, 24 and 30 inch heights. Beginners often need a smaller box, since ACE starts box jumps at 6 to 12 inches.
• Weight capacity. Look for a stated rating; 400 lbs is listed for both REP lines above.
• Stability. A wider base and internal supports help. REP notes internal support in its three larger wooden boxes.
• Grip and floor. REP's foam boxes have textured vinyl to reduce foot slipping and keep the box in place, and REP warns not to use plyo boxes on smooth or slippery surfaces.
• Weight to move. A large foam box can weigh 58 lbs; the wooden equivalent 50 lbs.

Plyo box exercises for beginners

Plyometrics are not for everyone on day one. ACE suggests checking that you have good posture and movement mechanics and know how to land, and gives a strength benchmark of at least five squats with 60 percent of your body weight within five seconds. ACE's box jump also says to learn squats and regular squat jumps first.

Box work you can start with:

• Step-ups onto the lowest side of the box.
• Low box jumps onto a 6 to 12 inch platform.
• Elevated or decline push-ups using the box for hands or feet.

ACE's plyometric workout suggests up to 30 seconds per exercise for three sets, emphasizing quality over quantity, with rest from 30 seconds to five minutes depending on the intensity of the workout.

How to do a box jump

1. Place the box on a non-slip surface, 3 to 6 inches in front of your feet, and stand with feet hip-width apart or closer.
2. Push your hips back and bend your knees until your heels are about to lift, with a flat back and your head facing the box.
3. After a brief pause, drive up through your legs and swing your arms forward to land on top of the box.
4. Land softly and quietly on the mid-foot, roll back so the foot is flat, and push your hips back and down to absorb the impact. Avoid locking your knees on landing.
5. Come back to the floor in a controlled way before the next rep.

ACE's rule for box height is simple: it should not exceed your vertical jump height. Raise the box only once your landings are consistently soft and controlled.

Common mistakes

• Choosing a box that is too tall and landing in a deep squat or catching a shin on the edge.
• Using the box on a slick floor, which REP warns against.
• Landing with locked knees, which ACE says may lead to knee injuries.
• Doing high reps when tired; ACE puts quality over quantity.

A rubber mat under the box can help with grip and floor protection; see exercise equipment mats. For other explosive work at home, see slam balls.

What to look for when you buy

Questions people ask

What height plyo box should a beginner use?

Start low. ACE's box jump begins with a 6 to 12 inch platform and says the box should never be taller than your vertical jump height.

Is a foam or wooden plyo box better?

Foam is the more forgiving choice for beginners and high reps; wood is firmer and lighter for its size. Both can be stable if the base is wide and the floor is not slippery.

What does 3-in-1 plyo box mean?

The box has three different side lengths, so turning it gives three heights, for example 20, 24 and 30 inches on a large box.

What exercises can you do with a plyo box?

Box jumps, step-ups and elevated or decline push-ups are common. Learn squats and squat jumps first before jumping onto a box, as ACE advises.

Sources

• Exercise Library: Box Jumps (acefitness.org), American Council on Exercise
• Lower-body Plyometric Workout (acefitness.org), American Council on Exercise
• 3-in-1 Soft Plyo Boxes (repfitness.com), REP Fitness (maker)
• 3-in-1 Wood Plyo Boxes (repfitness.com), REP Fitness (maker)

Sources checked 2026-10-14.