Haglofs Gram Gravel Trail Running Shoes SoLyte Midsole - A spongy layer between the sole and upper designed to help improve cushioning, lowering weight and decreasing breakdown. AHAR+ - A tough material placed in critical areas of the shoe to provide excellent grip without compromising durability. AHAR+ is a lighter version of AHAR. Rearfoot and Forefoot GEL Cushioning - ASICS GEL is a cushioning system created to meet the requirements of both professional and recreational runners. Rock Protection Plate - A rugged plate in the sole which protects the foot from sharp objects such as rocks and branches. Non Absorbing Fabrics - Made to maintain a lightweight feel in wet conditions.