Need durability Ankle support We recommend you take a close look at the Asolo TPS 520 GV Hiking Boots. Ideal for trekking with a heavy pack over uneven ground. Triple Power Structure midsole absorbs shock and improves stability. Rugged TPS Vibram rubber outsole has a strong, versatile grip. Heavy duty upper is made from smooth out full grain leather. Gore Tex membrane keeps feet dry while preventing interior moisture buildup. TPS high and low density polyurethane midsole incorporates three shock absorbers to improve comfort under areas of the foot that receive high impact during activity. Asoflex shank provides underfoot stability. Anatomic, antibacterial footbed adds support and reduces odors. The Asolo TPS 520 is in the NOLS Outward Bound gear checklist for incoming participants.