Yes4All Plyo Box, 3-in-1 Wooden Box Jumps for Home Gym (12/14/16 in), 450 lbs Boxes Step Up with Smooth Edges & Wide Built-in Handles for Jumping, Strength Training, Lunges, Squats, Dips

This was super quick to put together—maybe 10 to 15 minutes tops. I bought it for garage and home workouts, and it’s been great. Very sturdy and has held up through many uses over the past year. No chipping at all and the quality is excellent. It feels like it’ll last for a long time. Highly recommend!

Sturdy, easy to put together. Works as designed.

This box is great and exceeds all of my expectations. I was going to build one myself with plywood, but with the price of plywood I was able to buy this produce with pre-cut, pre-drilled and countersunk holes for just a bit more money and save hours of work. I strongly recommend using a drill/screw-gun to install the 24 screws, and don’t even try to use the tiny included screwdriver. It could be done with a solid hand screwdriver, but putting 24 screws into solid plywood will be tiring. Instructions were included, but I found it to be pretty easy to figure out. I did need a helping hand to hold the pieces in place until I got a few of the screws in place.

I bought this box when shopping for relatively budget 20x24x30 options. I read some negative reviews regarding manufacturing defects but decided to roll the dice.The experience got off to a bad start when a smaller size was delivered. Upon receipt, I decided I could make do with this variant. I tried contacting the manufacturer and so I sought a partial refund for the ~$30 difference. Their support line was hard to find and when I eventually got through, they informed me that Amazon was responsible. I had a hard time getting a live representative of Amazon but once I did they cautiously rewarded me the partial refund.Now I felt comfortable opening and assembling since I knew I wouldn't have to initiate a return. The 16x20x24" is composed of 3 outer pieces as well as 3 interlocking supports that go inside. Many of the pieces had superficial scratch damage or unsanded internally-facing edges but this doesn't really bother me for a piece of workout equipment.What did bother me was the state of the pre-drilled holes on the internal supports. I won't go into extreme detail; but, none of the holes on these pieces were usable: I had to drill three pilots in total. This really didn't bother me too much but I have done some entry-level woodworking before so I knew how to dimension the holes and align the two pieces of wood.Aside from this support snafu, the exterior pilots were well-positioned and of appropriate depth for the provided screws. There were a couple points where tightening to what I could consider reasonable resulted in uncomfortable creaking but I never observed any wood splitting.Once assembled, I stepped onto the box and felt very comfortable with it bearing my ~185lb self. I would be a little cautious using this box for explosive movements after seeing how insecure the support seems to be -- fortunately, I always planned to use this box for relatively low-impact exercises such as handstands and shoulder stands. I may update this review down-the-line to note its long-term durability and usability.EDIT: 3 months later, I am satisfied with the box. I have used a drill to tighten a screw or two where I have observed some gaps forming between the sides; but I don't hold this against the box. This has been a great and reliable piece of equipment for a fair price.

Easy to assemble. Sturdy. Just the right size for step-up exercises.

It is a wooden box but so sturdy. I am 245 and able to jump up and down off of it without fail. I also use it for box squats with no worry of dropping my entire weight, plus the bars weight, on top of it. Also makes a great step stool for around the house repairs.

I love having this around my garage gym. The three different heights are perfect. The box is super solid. It is often used as a step up to get things off of high shelves. The construction was nice. Absolutely do not put this together with a hand screwdriver. Your forearms will die halfway through. Otherwise this is a great piece of equipment to add to any home gym.

Easy build, very sturdy