Rearfoot and forefoot GEL cushioning systems work together to attenuate shock ASICS Men’s Dynablast 2 Running Shoes provide runners with a comfortable ride. These responsive running shoes are designed to improve your post-run feeling. The circular knit upper improves airflow and provides a supportive foothold. The FF BLAST technology provides lightweight cushioning and a responsive rebound. The underfoot cutouts provide excellent bounce. The OrthoLite X-30 sockliner provides soft step-in comfort. The rearfoot and forefoot GEL cushioning systems work together to attenuate shock.