The GESTER GT-KB05B Low Temperature ROSS Flexing Tester is an advanced environmental testing system designed to measure the flex fatigue, crack resistance, and growth rate of shoe soles, rubber, PU, PVC, and TPR materials under extreme cold conditions down to -40°C. Fully compliant with ASTM D1052, SATRA TM60, ISO 5423, and EN ISO 20344, this instrument features a 150L SUS304 stainless steel chamber equipped with a 7-inch color touch screen and a 6-station fixture capable of testing 12 samples simultaneously. Its cascade compressor refrigeration system provides rapid, uniform cooling, making it an essential quality control solution for winter footwear, outdoor gear, and arctic safety boots.