The PolyDryer Box now comes in an XL variant, designed to hold 3 kg spools. The system incorporates user feedback from the original PolyDryer, with changes including a new carry handle and latch, as well as color-changing desiccant as standard.

It loses the combined, clean silhouette of the original – the Dryer module matches the original 1 kg spool box footprint, not the XL's larger outline – but like that system, also benefits from community designs and mods.