The lightsabers used by Jedis and Siths were mainly of the same length or varied slightly depending on the wielder. The lightsabers held by the paradigmatic warriors such as Obi-Wan Kenobi, Anakin Skywalker, Luke Skywalker, and Rey all fell s around 3 feet ( 91.4 cm), where as a taller jedi like Kaminoan Jedi Master Yarael Poof, was seen yielding a blade around 4 feet (121.92 cm).
The blade compared to the other parts of the saber, weights not much, allowing the wielder to customize it to its comfort without having to worry about balance or add on weight. NEO Sabers offers you the ideal blade, measuring 1 inch OD, 2 mm thickness, 92 cm length in default which you are free to shorten to your liking.