The Barely Zero Mid Waist Brief adapts to your body better than ever before and continues to adapt through your body's natural changes. Fit tip: based on customer feedback, this brief best fits customers who wear up to a size M in underwear. For a wider size range, check out the Barely Zero Mid Waist Brief 2.0! Details Materials & Care Shipping & Returns • Full coverage & comfort where you need it most, all day and all night.• Tailored for a close, comfortable fit that doesn't dig in or show lines, even under tight clothing! Complete with a 100% cotton lining.• Made from CloudFit: a soft, ultra-elastic blend that's breathable & moisture-wicking for all-day skin comfort. Now with improved odor reduction! • Materials: 68% CloudFit nylon blend, 32% Spandex; Lining: 100% cotton• To lengthen its wear-life, we recommend handwashing your Barely Zero. Dissolve a gentle detergent in cold water (86°F/30°C max) and fully immerse the underwear. Gently press/knead it, then rinse (soak no longer than 5 minutes). Hang or lay flat to dry in a cool, shaded place. If you choose to use a washing machine, please use a laundry bag. • Free Shipping on US orders of $50+.• For health and safety reasons, we do not accept returns on briefs. View our shipping and returns policy here. Questions? Email us!