So easy-I just opened the packaging and immediately put it directly under my desk...perfect! The rocking feature is a really great bonus. And I quite like the feel of the raised bumps under my feet. My feet stay on it and don't slide off. It's lightweight but stays securely in place. Perfect size. It lifts my feet up high enough to give good relief to my old pelvic injury and sore right knee. I'm feeling great lower back relief too. I can work for longer periods at my desk now without a lot of pain. No fabric surface means I can easily wipe it clean with disinfectant to keep it sanitized. Its quite sturdy and I expect to use it for a very long time. 鶹 works with reliable carriers who get my order to me quickly. I always find what I want in the jungle, every time! Money well spent.