At Hotmilk Lingerie, our commitment is simple yet bold: to design premium maternity, nursing, and post-breastfeeding lingerie that is beautiful, empowering, and thoughtfully created for both people and planet.
As a female-led lingerie brand, innovation and conscious design have always been at the heart of what we do. Reaching 61% certified sustainable of units delivered in 2025 marks an important milestone — not as a finish line, but as proof of progress. In this article, we’re opening the door to what that number truly means, how our design and sourcing processes support it, and where we’re heading next.
Why Sustainability Matters to Hotmilk
Hotmilk designs lingerie for women navigating real life — pregnancy, breastfeeding, post-breastfeeding, and every chapter beyond. Designing for changing bodies comes with responsibility: to the women who wear our products, to the people who make them, and to the world our children will inherit.
Sustainability at Hotmilk isn’t a trend or a marketing tick-box. It’s embedded in our design philosophy, our fabric sourcing, and our manufacturing partnerships.
From the earliest design sketch, we consider:
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Safe-to-skin fabrics for mums and babies
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Durable, high-quality construction that lasts through wear and washing
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Innovative, multifunctional design that adapts beyond maternity and nursing
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Reduced environmental impact across materials, packaging, and logistics
We believe in evolution, not perfection — and our 2025 achievement of 61% certified sustainable units reflects that ongoing commitment.
What Does “61% Certified Sustainable” Mean?
When we say 61% certified sustainable, we mean that 61% of units we delivered in 2025 contained a certified sustainable element. This demonstrates our progress in embedding sustainability across our production.
These criteria span the entire product lifecycle — from design and sourcing to manufacturing and packaging.
Our Sustainability Pillars
1. Conscious Design & Longevity
Hotmilk products are designed with multifit and adaptive features, allowing garments to move with women through pregnancy, nursing, and beyond. Adjustable hooks, flexible bands, and innovative solutions (such as hidden functionality and magnetic clips) extend garment life and reduce unnecessary consumption.
Design for longevity is one of the most impactful sustainability tools we have.
2. Materials & Components
We prioritise certified sustainable and innovative fibres, including:
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OEKO-TEX® Standard 100 certified fabrics and trims, ensuring materials are free from harmful chemicals
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GRS-certified recycled fabrics and laces
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FSC forest-certified bamboo and viscose fibres
These choices support both skin safety and reduced environmental impact, without compromising on comfort or performance.
3. Ethical & Environmental Manufacturing
All Hotmilk manufacturing partners undergo third-party audits (BSCI or SMETA), ensuring:
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Fair wages and safe working conditions
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Compliance with environmental regulations
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Responsible water usage, wastewater treatment, and chemical management
Garments from each production batch are also subject to third-party quality testing to ensure durability and compliance.
4. Packaging, Freight & Logistics
We continue to reduce waste beyond the garment itself:
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Compostable courier bags (certified AS4736 & AS5810), printed with soy-based inks
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Elimination of single-use plastic hangers
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Reduced hang tags and increased use of printed garment labels
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Courier partners selected for strong environmental policies
Design as a Sustainability Tool
Hotmilk’s approach to sustainability starts with innovative product design.
Our design principles include:
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Conscious fashion: Designed and fit on real women, addressing specialised needs across life stages
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Quality-first thinking: Premium fabrics, thoughtful construction, and durability
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Innovation: Leading with certified sustainable fibres and technical garment design
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Continual improvement: Ongoing refinement of fit, flexibility, and comfort
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Easy-care design: Easy laundering, line-drying, and minimal resource use
When a bra fits well, lasts longer, and adapts across multiple life stages, its environmental footprint is reduced by design.
What 61% Certified Sustainable Means for You
When you choose a Hotmilk certified sustainable piece, you’re choosing:
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Safe, skin-friendly lingerie designed for mums and babies
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Ethically made garments produced in audited factories
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Reduced waste through thoughtful packaging and longer garment life
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High-quality, innovative design that adapts with your body
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Being part of our evolving sustainability journey , not a static claim
Sustainability, for us, is about better choices — made consistently.
Challenges We’re Actively Working On
Sustainable lingerie design is complex, and we’re transparent about the challenges:
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Supply chain traceability across specialised lingerie components
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Scaling recycled and bio-based fibres while maintaining performance and fit
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Reducing logistics emissions in global freight
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Advancing circularity, including reuse and end-of-life solutions
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Encouraging sustainable care habits among consumers
Each challenge informs our roadmap — and pushes us to do better.
What’s Next on Our Sustainability Roadmap
61% is not our destination — it’s our foundation.
Our next steps include:
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Expanding recycled and bio-based fabrics across all collections
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Continuing to reduce packaging and labelling materials
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Increasing transparency and education through behind-the-scenes storytelling
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Supporting customers with care guidance to extend garment life
How You Can Join the Journey
Sustainability is a shared responsibility. You can help by:
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Caring for your lingerie to extend its lifespan
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Composting or reusing Hotmilk packaging
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Sharing your story and feedback with us
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Helping shape future sustainable design decisions
We design with women, not just for them.
At Hotmilk, sexy and sustainable are not opposites — they are partners.
