ByeBra - Leak-Proof Underwear Period Boxerstring Lace Low Flow Black

The ByeBra Leak-Proof Period Boxerstring in Black blends delicate lace with discreet low-flow protection for a sleek, modern silhouette.

Product Details

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

Designed for lighter days, this boxerstring offers a refined balance between coverage and minimalism, combining a smooth microfibre base with elegant lace detailing. The fabric feels soft and breathable against the skin, while the laminated absorbent core provides reliable protection without adding bulk. The boxerstring silhouette delivers a flattering shape with subtle shaping through the hips, remaining invisible under fitted clothing. Lightweight and flexible, it moves naturally with the body for all-day comfort. Both practical and beautifully styled, it is ideal for everyday wear, slim-fitting 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.