I have had a pair of baby blue suede thunderbird minnetonka mocs for 20 years...no kidding - through rain, snow, sunshine and sand these mocs have stood up.  I even washed them by hand!  But finally the stitching began to unravel between the sole and the upper...worst day of my life the day they went into the trash.  I recently ordered the white leather thunderbird mocs and am planning on getting the brown soon.  LOVE this product.