Salming Elements Ladies Running Shoes Synthetic-and-mesh PU Layer - Protects the lower part of the upper from debris such as rocks and branches has been added by rocshield. Exo Skeleton Design - Helps with stabilization as well as relieves pressure on the MTP joints of the foot. Lightweight Adaptive Heel Cup Design - Hugs the calcaneus providing a much more better fit and feel. RunLite Cushioning - A high abrasion EVA that is designed to provide a responsive and flexible run as well as maximum ground feel. TGS Design - Provides extra stability from the heel through to the forefoot that ends with a 75 line which in turn promotes extra flexibility where it's needed.