ByeBra - Leak-Proof Underwear Period Thong Laminated Low Flow Black

The ByeBra Leak-Proof Period Thong in Black offers discreet low-flow protection with a sleek, invisible silhouette for everyday confidence.

Product Details

• Fit: Thong cut
• Padding: Absorbent laminated gusset
• Support: Low flow leak-proof support
• Fabric: Soft microfibre with laminated core
• Straps: Strapless
• Fastening: Pull-on style

Designed for lighter days, this thong combines innovative laminated absorbent technology with a silky microfibre feel for barely-there comfort. The fabric sits smoothly against the skin, providing flexible support without bulk, while the thong silhouette ensures complete invisibility under fitted clothing. Breathable and lightweight, it allows natural movement while offering reliable low-flow protection. The seamless finish maintains a refined, smooth profile, making it ideal for everyday wear when minimal coverage is preferred. Both practical and elegant, it is ideal for workwear, tight outfits and subtle cycle support.

View our Bra & Briefs Size Guide for UK and international lingerie sizing guidance.

View our Bra & Briefs Style Guide to help you find your perfect bra and knickers.

Empreinte uses premium lingerie fabrics including polyamide, polyester, elastane and cotton across selected garments and linings. The exact composition varies between products, so always check the product information and the care label inside the garment.

To protect the shape, elasticity and detailing of your Empreinte lingerie:

• Hand wash whenever possible.
• Use a gentle detergent designed for delicate fabrics.
• If machine washing, place the item in a lingerie wash bag, use a 30°C delicate cycle and wash with similar colours.
• Avoid bleach, fabric conditioner and harsh detergents.
• Do not tumble dry.
• Keep lingerie away from radiators and direct heat.
• Allow bras to dry naturally without twisting or wringing them.

We stock Soak lingerie wash, which is designed for delicate fabrics and is easy to use when caring for premium lingerie.

UK postage is free for all orders over £50.

EU postage is free for all orders over £250.

International postage is free for all orders over £300.

More information on shipping & delivery.

We know lingerie must fit perfectly and look great. That's why you may return any item within 60 days of purchase – no questions asked and receive a full refund.

More information on our refund, returns and exchanges policy.