Existing modelNamed the 2009 Backpacker Magazine Best All Around Boot, the Zamberlan 965 Lhasa GT RR is perhaps Zamberlan's most durable backpacking boot. Ideal for carrying heavier loads and hiking through shrub filled terrain and thick brush, the 965 Lhasa is built on the exclusive Zambrlan Vibram StarTrek sole. The StarTrek sole features dual-density PU construction (one for comfort, one for support), a TPU stabilizer, and a tread with excellent downhill braking, toe climbing zone, wide yet grippy lugs for easy cleaning, and a heel strike zone. The 2.8mm Hydrobloc nubuck leather upper ensures the greatest protection from water and snow and the Zamberlan RRS (rubber rand system) protects the foot and ankle as well as prevents the leather from deterioration caused by cracking, cuts and scratches. The Gore-Tex membrane offers maximum water protection and breathability.