When it comes to wheelchairs, there are more options than ever. You can find cushy, comfortable chairs designed for hours of sitting or lightweight, basic models for short-term use. Some are designed to get you from Point A to Point B quickly, navigating even the toughest terrain, while others are built with portability or durability in mind.

Before you start shopping, it can help to outline what you’ll need in a wheelchair. Will the rider primarily be steering, or will someone be pushing from behind most of the time? Will it need to be used to sit at a desk or table all day? When it isn’t in use, how will it be stored?

One major issue with wheelchairs is portability. Unless you plan to only use your wheelchair at home, you probably need to be able to fold it up and place it in a vehicle trunk at least occasionally. Some wheelchairs easily fold and store, while others have elements that make that a little more complicated. If the wheelchair will be used outside the house infrequently, this probably won’t matter as much as other features, but it’s still worth considering.

Comfort can vary widely from one wheelchair to another, but the seat cushion and back, armrest and footrest all play into a chair’s comfort level. If you plan to only occasionally use the wheelchair, you may not need a plush model with extra cushioning, so you might trade comfort for more portability. Some wheelchairs have something called “desk arms,” which ensure you can continue to use your wheelchair for seating when you roll up to a desk or table.

Safety factors in as well. Some wheelchairs come with seatbelts to keep you securely locked in place. The brakes on your wheelchair are also an important factor. If you plan to do most of the wheeling around yourself, pay close attention to the passenger-controlled brakes. However, some wheelchairs come with handbrakes designed for the person pushing to control stopping.

If you plan to carry items around, you should also consider adding on a wheelchair bag, which acts as a backpack. Some wheelchairs come with a handy pouch that you can use for smaller items, such as keys or a cellphone.

All the features on your wheelchair won’t matter if it wears out only a few months after you buy it. Some wheelchairs are built to last, with frames that can hold up even with constant use. Rust resistance is another factor you’ll see on some wheelchairs. Others include special wheel bearings to keep the wheels reliably moving.

Since everyone is a different height and build, the right wheelchair can be a very individual decision. Look for a wheelchair that can adjust for various heights, but it’s also important to pay close attention to weight limits. While many wheelchairs can support up to 300 pounds, you’ll find that some have an even lower limit, such as 250 pounds. Also, pay attention to the placement of the foot and armrests since those can help determine whether a wheelchair is comfortable for its rider or not.