Chaco sandals are designed to be sturdy for hiking and other strenuous outdoor activities, as well as to provide excellent grip in water. Some detractors claim that Chacos cause blisters. While this is true for some first-time Chaco users, the sensation of a Chaco on your foot after they've been broken in is well worth the first effort. And since Chacos are made with thick, durable leather, they should last forever if taken care of properly. If you're new to Chacos, we recommend breaking in your pair overnight then wearing them all day every day for a few weeks before taking them off for storage. This will allow the leather to soften a bit so it's easier to walk in later on. Also, make sure never to wear Chacos beyond what its manufacturer recommends. That way, you don't risk damaging their quality. When you take off a Chaco for the night, put newspaper or cardboard under the heel to avoid dirt from entering through the sole. Then, when you get home, wash the shoe thoroughly with hot water and soap to remove any dust or dirt that may have accumulated during use. Dry completely before storing. Blisters are caused by too much pressure being placed on an area of the body. As you walk, your feet move through space which allows blood to flow where it's needed most.