GIKPAL 3 in 1 - 16"x20"x24" Foam Plyometric Jump Box,Stable Plyo Box with 3MM Anti-Slip Particles for Home Gym Jumping Exercise, Weight 38lbs

With 14x16x20 inch dimensions, I am using the 20-inch height for step-up exercise with weight vest (25lbs so far) . I am not jumping up to the 20-inch height since the other dimensions would not be as stable as larger dimensions. I don't see the need to do such jumps or higher and risk missing the height and causing an injury. Step-ups can achieve similar strength safely (I do them next to my squat rack frame and slide my hand along the vertical frame for safety). But I want the other dimensions for other family members who are doing squats at lower heights with weights, step-ups at lower heights, etc. We did not even remove the item from the package box to reduce wear and tear. Suits our plan of use well. Tried to look for wood construction with grip surfaces with these dimensions and they are rare and much more expensive. At least the soft construction helps with moving it around more safely than a hard wood box. I am 69 yr old male , 5 ft 9 inch tall, 153 lbs.