It's not that it's useless, but that its function is too professional and useless for most people. In my opinion, compression equipment can relieve muscle fatigue, reduce lactic acid accumulation and accelerate recovery after exercise, but the exercise intensity of ordinary exercise people can not reach the level of understanding the difference. In other words, you exercise too little and it's useless to wear it.
There is no uniform standard for equipping this thing, only what suits you. Strength training in the gym does not need to compress pants, and no one will practice squats or hard pulls for five hours in a row, so strength training is really made into endurance training.
Just buy ordinary tights at the gym. Decathlon, Nike and Adi are optional. There are many domestic brands now. Just choose any style and price. There is not much technical content. Relatively cheap, many styles, but also convenient for gym modeling friends.