i am very disappointed with sperry topsider esp since it's known to make aquatic related clothing, shoes, & accessories.  even though the boot may be comfortable and is not ridiculously weighted, the sealing was POOR.  i've only worn these boots a handful of times, and it's already showing that the seal was poorly glued or applied.  the rubber is completely detaching from the sole.  i would proceed with caution if you're contemplating purchasing this product.  boo & hiss!