I find my Merrell Realm-Lace shoes to be very comfortable and durable. I wear them daily in my civil engineering practice, both at my office and in the field, where I often visit muddy and rough surfaced construction sites. The shoes have a clean and practical engineering look, and as if by design, the shoes clean up nicely. Although the 43-inch long laces tend to wear out after a few months, new laces are available from Merrell. Despite this situation, I find the laces tend to hold their position after being tied, which is an important attribute. This seems to be a problem for other shoes with laces that are manufactured with too much synthetic fiber that slip when tied. I rate the overall performance of my Merrell Realm-Lace shoes as excellent.