Whether you have an above-ground pool or a pool that is built into the ground will make a difference and you can quickly eliminate a good number of slides simply based on this one criterion. Whatever type of slide you choose, you should be sure it is sturdy and bolted to concrete, made from durable materials, and includes high sides to ensure safety while going down the slide. You should then consider different inflatable swimming pool slides based on the shape you would prefer, how well it fits into the surrounding details of your pool and property, and other features in which you are interested.
Inflatable swimming pool slides can come in a number of different shapes, though the most common are straight slides or those with one or more turns in them. A straight slide is usually a bit easier to go down and may cost less money, but it may not satisfy the desires of everyone using it. Turning slides are often a bit more exciting and while they may not be the best choice for younger children, they may be preferred by adults. These types of slides will often consist of a number of different turns similar to a spiral staircase and will often be a bit more expensive.
You should also consider inflatable swimming pool slides with other features and those that can fit best with your pool and yard. Some slides are designed to look like rocks, with the steps up the slide and the slide itself somewhat concealed within the rock surface. These can fit in well with a pool that has other rock features, and may be somewhat more attractive. Some slides feature a water pump that pulls water up from the pool and then pours the water down the slide for easier sliding. There are also inflatable swimming pool slides that are inflatable; though somewhat less resistant to wear and tear, these slides can more easily be put away during bad weather and are not permanent fixtures.