PMI's Rope Tech gloves are extremely versatile. They offer far better dexterity than PMI rappel gloves for tending a Z-rig or tying knots. If your primary use will be for rappelling, we recommend PMI Lightweight or Heavyweight leather gloves. 2008 Model (Yellow): 2 layers of goat skin and a 1 layer synthetic leather palm with spandex and air mesh for breathability. 2010 Models (Tan or Tactical Black): a synthetic leather (palm base layer). Cowhide layer (finger wear points and palm) Two-way stretch spandex on top and fingers for greater mobility and breathability. Elastic cuff with pull-tab and Velcro closure. Carabiner loop stores inside for snag free operations.