G.I. Type Sierra Sole Black Boot – The Surplus Guy。Durable black tactical boots. Lace-up design. Rugged sole for traction. Perfect For Traversing Any Terrain – Upper Section Of The Jungle Boot Is Constructed With A Breathable Canvas Fabric With Vent Holes That Will Keep Your Feet Cool And Dry. These Authentic Vietnam-Era Style Boots Were Designed For Hot Weather Climate Thick Vulcanized Rubber Cleated Panama Outsole Provides Enhanced Traction While You Are On The Move. For Decades The Panama Sole Has Been A Proven Choice For Active Duty And Public Safety Personnel For Its Durability And Wearability.