they double-checked to make sure they were well-stocked with no end of snow goggles and sun glasses and anti-sunburn cream , mountain climbing ropes and climbing ironmongery , thick woolen garments and windproof canvas outer-clothing , sheepskin gloves , sheepskin moccasins , leather boots , woolen blankets , eider down sleeping bags , air mattresses , 30 small windproof canvas bivouac sacks , 10 huge windproof canvas tents .