Astorflex Greenflex Rubber Sole BootsThe Greenflex Desert Boot merges six generations of Italian craftsmanship with forward thinking eco standards. Handbuilt using 100% vegetable tanned calf leathernaturally breathable and free from synthetic dyeseach pair develops a rich patina while maintaining odor resistance. The stitch down welted natural rubber sole, harvested from rubber trees, offers cloud like cushioning that improves with wear. True to size molds to your foot shape within days.