When choosing fencing specifically for a pool area, you need to ensure you know the local requirements and regulations first. There may be specifics about how tall it needs to be and how a gate locks and other such local codes. However, once you've found out these specifics, you can then choose the right material and design for the look and overall security you want on your property in particular. Note a few details to consider so you know you get the best choice for your home.
1. Glass fencing
Glass fencing gives you a clear view of the pool and is difficult if not impossible to scale, but it also means cutting off air circulation around the pool, so you might miss out on some cool breezes during those warm summer days. It may also rattle a bit when winds are strong, as there are no openings for that wind to pass through.
2. Mesh and chain link
A mesh fence allows for more air circulation and offers a bit more privacy than a glass fence, but it may also be easier to climb. This can be an issue if you have younger children who may be prone to scaling the fence when not under supervision. There may also be more regulations to consider about mesh fencing, such as how high it needs to be to keep children from climbing it and how dense the mesh must be, to keep pets from getting their noses stuck in the fence.
Note that these concerns may also apply to a chain link fence; chain link, or hurricane fencing as it's often called, can let in breezes and air but may also have more restrictions when placed around a pool. The metal of a mesh or chain link fence might also be more prone to rust and corrosion; you may want to invest in a more costly zinc-plated metal or plastic-covered mesh for use around a pool.
Vinyl fences are often chosen for commercial and public pools, as they're very maintenance-free and will withstand the water and chemicals of a pool. There may also be fewer regulations to consider with vinyl, as most vinyl fences made for pools will only have a small space between slats that won't allow an animal to get stuck. They're also usually just tall enough to keep children out without being so tall so as to cut off your view of the pool, so they may be the easiest and simplest option for pool fencing.