The latest Thinx innovation combines leakproof protection and everyday wearability in a style designed to move beyond the underwear drawer. CHICAGO, Oct. 6, 2026 /PRNewswire/ -- Thinx, the #1-selling reusable period underwear brand (based on grocery, drug, mass, & dollar units, 52 weeks thru 9/5/26), today announced the launch of Butterfly Shorts, a new category-bending style that blurs the line between apparel and period care.








