Insulated for winter, these waterproof leather work boots are ideal for all-around outdoor projects.. . . . . . . Heavy duty oiled waterproof leather resists abrasions. 400 grams 3M Thinsulate(TM) Ultra insulation for winter comfort. Vibram(R) outsole arranged in a wide stable platform to distribute your weight while not leaving indentations. Vibram compound provides maximum traction on wet/dry surfaces and various terrain. Long lasting leather / Dri Lex(R) combination lining. Flexwelt(R) insole. . . . .