Due to the high cost of mechanical refrigeration, Evaporative Cooling (EC) can be an alternative technology for small farmers in developing countries, such as Thailand. This study aimed to experimentally investigate the performance of EC using a wet fabric blanket. A real-scale cargo chamber, commonly used in Thailand, was constructed, and equipped with axial fans to simulate airflow during transportation. Two pallets of test products (hollow plastic balls) were loaded into the cargo and covered with the wet blanket. During the experiment, the inlet air velocities varied from 0.8 m·s−1 to 3.6 m·s−1 while the constant climate conditions were maintained (29-30 °C and 70-73 %RH). The air and product temperatures and air relative humidity were measured every minute for three hours using thermocouples and hygrometers, respectively. This EC method allowed the air temperature decrease by approximately 3-4 °C. When the inlet air velocity decreased, a lower temperature reduction was observed. The quality preservation performance was also evaluated based on lettuce mass loss. Lower mass loss was observed for the product stored inside the cargo chamber (< 6%) compared to those outside (8-10%). This study suggests the potential use of a wet blanket as an EC cooling medium for a short-distance transport to enhance the cold chain performance in Thailand.