83% energy return: Energy Return is measured as the ratio of energy returned by the 45 mm disk shaped sample, divided by the energy absorbed by the sample. Energy return is measured using a modified ASTM F1614-99(2006) Procedure C with an electromagnetically driven impact test device. Samples are approximately 20mm thick. The foam sample is impact tested 1000 times to obtain a repeatable measure of mechanical characteristics.

3x more durable: Comparison is to standard EVA (SSL EVA 52 Asker C durometer) measured using a modified ASTM F1614-99(2006) Procedure C with an electromagnetically driven impact test device. Samples are approximately 20mm thick. Durability is determined by comparing the sample thickness before and after 100,000 cycles of dynamic loading.