Inov-8 RocFly G 390 Hiking Shoes - Mens Grey/Black/Yellow 9/ 43/ M10/ W11.5 000995-GYBKYW-S-01-10. The ROCFLY G 390 uses a unique Graphene-infused G-FLY foam that supercharges your feet so you can hike further than ever before. The world-first foam is...