Of all the pools include what you can choose; the safety pool cover is probably what you need to secure your pool in the season off (or even during ordinary swimming years).
If you have children, there may be doubts that you want a safety cover. The basic type of safety cover is basically a giant trampoline installed safely above the pool.
This cover was installed by drilling an anchor point to the concrete deck around the pool. The cover is then installed by securing the rope to each of the anchor points. You can buy custom retractable pool enclosures for indoor-outdoor pools from various web sources.
This cover is very strong. In fact, some manufacturer advertisements for them showed elephants stood in the middle of a closed pool while other advertisements showed a mistaken car was expelled to the pool. The car was half sinking, but the cover held was strong.
One pull back to this safety cover is that the leaves or debris can still enter your pool. It will make your pool a little messy to be cleaned in spring, but it's a small price to pay for security.
Finally, there are solid security blankets that combine winter cover virtues and safety cover. They are the most expensive type and even need a pump to keep water from gathering in the middle of the cover, but they will give you security and cleaner water.
If you have an interest in the safety cover, you must look for online quotes and compare it with those offered by your local pool company. Keep in mind, that you will definitely want a safety cover to be installed professionally (they are not easily installed).
This might be clear, but unless you are an expert, putting up your own safety cover potentially defeating yourself. If you want to make sure to avoid problems with size or fit, you might better buy the pool cover and install it by your local pool business.