However, I wanted to write an even more detailed review of the Chaco Z/1 Classic sandals since they are my favorite pair of walking sandals I’ve tried. Good Housekeeping / Isabella Cavallo Chaco sandals have great traction with deep treads, which help prevent me from slipping on wet rocks around rivers! Arch supportThe Chaco Z/1 sandals offer superb arch support that impressed our footwear pros. Our experts in the Good Housekeeping Institute Textiles Lab have been researching and testing footwear for decades, including walking sandals, running sneakers, and more. She has owned and worn the Chaco Z/1 Classic sandals for two years, and she has tried other walking sandals in the past as well.