RYKA Women's INFLUENCE2.5 Cross-Trainer Shoe 100% Mesh, Synthetic Imported Rubber sole Weighs 8.0 oz Breathable mesh upper with no-sew overlays and supportive independent lacing system. RE-ZORB footbed. Dual foam midsole engineering provides extra cushioning at key pressure points in heel and forefoot. Medial post provides additional support under the arch. Ergonomic sole unit design influenced by the shape of the foot allows more natural movements and offers outstanding traction and support.