There are 2 products.
Dos Maderas 5+3 is a Barbados Rum, carefully assembled in the Caribbean where it ages the first 5 years in American oak barrels, to then be transferred to the Williams & Humbert distilleries in Jerez de la Frontera in Spain. Here he finishes aging for another 3 years in barrels used for the prized Sherry Dos Cortados, obtaining a distillate with an extraordinary aroma.
Dos Maderas PX 5 + 5 is a Rum from Barbados carefully assembled and aged for the first 5 years in the Caribbean, before being transferred to the Spanish distilleries Williams & Humbert, where it ages the next 5 years in barrels that contained Oloroso and Pedro Ximenez Sherry. A great Rum that deserves to be fully enjoyed.