Flip flops have evolved quite a bit over the years. No longer are they flimsy pieces of foam with ill-fitting straps. Today’s boating sandals are durable, comfortable and come in a variety of styles.

Grundéns has been making clothing for professional boaters and anglers for more than 100 years. In recent years, the company has applied its “sea creds” to rugged, handsome sportswear including shirts ...