The Faith Bra features merino wool lining, offering light, seamless support that stays in place without digging in. Merino wool wicks moisture away from the skin, resists odor naturally, and regulates temperature so the fabric adjusts with the body instead of trapping heat. What Our Gearhead(R) Experts Are Saying:"A full hour of yoga flow and I never once needed to adjust the straps. Merino kept me from feeling sweaty or clammy from warm-up to final stretch."