This could be entire article to itself, but we'll give a brief rundown to get you started. Remember, anything we can't cover here, the bass experts in our retail and online sales teams will be more than happy to elaborate on.
Gauge - This is the thickness of the highest string followed by the lowest. Typical gauges range from 45-100 (100s) to 65-130 (130s) for 4-string basses. 100s, 105s, and 110s are great for most players.
Scale Length - Most basses are long scale, some are short scale, and fewer still are medium or extra-long scale. Choose the strings that match your bass. Scale length is usually clearly labelled on the packaging.
Core - This is a single strand of metal at the centre of your strings. Round cores are generally warmer, while hexagonal cores are brighter. Most are made from steel but manufacturers often experiment with different alloys.
Windings - Most strings are roundwound, indicating a round wire is wrapped around the core. These are bright and versatile, while flatwound strings are warmer and have reduced finger noise when sliding along the strings.
Winding Materials - Most windings are made from a nickel/steel alloy, which has a bright tone when new. Some strings may be pure steel (brighter), pure nickel (darker) or another alloy entirely.
Coating - Some strings may have a coating applied to stave off dirt, sweat, grime and the inevitable corrosion that comes with them. They last longer but also typically cost more. Coated strings are great for infrequently-used basses.
For more info, check out our extensive range of Bass strings online here.