Yes, Mike is right, most do have retractable legs.
I have owned several different types and can offer a suggestion for what to look for.
I am not an expert on what the terms are called, I just know how certain models work. Some have tighteners/knobs on the adjustable legs that you screw/twist/turn to tighten or loosen. Those are a nuisance - to me. Too much trouble and takes too long to adjust. :-/
Some, however, have a lever-like tightener/lock that merely "snaps" to lock in place. That is much, much quicker and easier. And they seem more stable.
Just something to keep in mind when shopping for a tripod.
