POC makes a Receptor Bug (like this model) and a Receptor Bug Adjustable (like the M/L you are referencing). The regular model comes in one size (i.e. Medium 55-56cm) and the adjustable models cross two size categories like the M/L you are seeing.
POC makes a Receptor Bug (like this model) and a Receptor Bug Adjustable (like the M/L you are referencing). The regular model comes in one size (i.e. Medium 55-56cm) and the adjustable models cross two size categories like the M/L you are seeing.