# Leakproof Heavy Flow Period Underwear, Small ## What it is The Leakproof Heavy Flow Period Underwear, Small is a UVA wellness product. Positioned for for-him and for-her. Current price: $27.99 (retail value $31.00). In stock. ## Key facts - Brand: UVA - SKU: 100495 - MPN: 100495 - Category: for-him, for-her - Condition: new - Ships to: United States, in plain unmarked packaging - Returns: unopened items in original packaging within 30 days (hygiene restrictions apply to used products) - Card statement reads: XDIPX ## Emma's take Heavy-flow protection that still feels like real underwear. This is the heavy-flow, small-size cut for the days your usual protection isn't enough. Four layers, including a breathable, waterproof TPU barrier, hold up to 12 hours without a backup pad, and the outer fabric stays ultra-thin so it sits like regular underwear under leggings or workout gear. Skip it if you need graduated absorbency across the week; heavy is one fixed level, not an adjustable range. Rinse after every wear, wash cold, and air dry to keep the leakproof layer intact. ## Specifications - Absorbency level: Heavy - Size: Small - Protection time: Up to 12 hours - Body fabric: 88% Nylon, 12% Elastane - Layers: 4-layer LeakBlock construction with waterproof TPU barrier - Certification: OEKO-TEX Certified - Care: Reusable and machine washable ## What's in the box - 1x Heavy Flow period underwear, Small ## Care instructions - Rinse in cold water immediately after wear to prevent staining. - Machine wash cold on gentle, skip fabric softener and bleach. - Air dry fully before storing; skip the dryer's high heat. - Avoid oil-based products that can break down the TPU barrier. ## Frequently asked questions ## How much leak protection does the Heavy Flow style actually give? This pair is built with a 4-layer LeakBlock system, including a breathable, waterproof TPU barrier, rated for up to 12 hours of protection on heavy days. It's designed as your main line of defense, not a backup layer stacked under something else. ## Is the Small size sized like my regular underwear? Yes. The brand designs this line to fit like the underwear already in your drawer, cut close instead of bulky, with four absorbent layers built into the gusset. ## Can I wear this instead of a pad or tampon on heavy days? Yes, that's what it's built for. The 4D or 5D LeakBlock layers absorb flow directly and lock in moisture and odor, so most people use it as their only protection on heavy days rather than pairing it with a pad. ## How do I wash period underwear between wears? Rinse in cold water right after you take it off, then machine wash cold on a gentle cycle. Skip fabric softener and bleach, and air dry instead of using the dryer's high heat so the waterproof layer stays intact. ## Can I wear this during exercise, travel, or overnight? Yes. It's built for exercise, sleep, travel, and everyday wear alike, not just as a stationary-day option. The same 4-layer construction that handles a heavy flow at your desk handles it moving too. --- Canonical: https://xdipx.com/products/uva-heavy-flow-period-panties-s Last updated: 2026-10-16 xdipx.com is an editorially curated sexual wellness storefront. Support: hello@xdipx.com. Billing descriptor: XDIPX.