Tartarus Side Buttons Brief – Bold Detail, Confident Fit Show off your confidence with the Tartarus Side Buttons Brief by Undergear. Crafted from a unique blend of 42% nylon, 40% polyester, and 18% rubber, this brief features a distinctive side button detail that elevates the classic brief silhouette into something truly eye-catching. Designed for men who want to stand out. Key Features Side Button Detail – Signature design element that sets this brief apart Structured Fit – 42% nylon / 40% polyester / 18% rubber blend for shape and stretch Classic Brief Silhouette – Full front coverage with a bold twist Available in Black, Sizes S–XL Fabric & Care 42% Nylon / 40% Polyester / 18% Rubber. Wipe clean with warm water and mild household cleaner. Do not wring. Dry completely in shade before storing. Frequently Asked Questions What is the Tartarus Side Buttons Brief made from? Made from 42% nylon, 40% polyester, and 18% rubber for a structured, stretchy, and durable fit. What makes the Side Buttons Brief unique? The side button detail transforms a classic brief into a bold fashion statement — perfect for those who want to express their style. What sizes are available? Available in S, M, L, and XL in Black.