The beauty of merino is its all-temperature application. Here in the desert, my concern is more towards temperature regulation in the summer, when it is 100 to 120F, though great for temperature regulation when layered in winter (however mild) too. Looking to increase my mileage by 50% per week by taking a longer route to work, while getting my average cadence up to 110, while losing that last 40 pounds. Good times.