Over the past two decades, the material focus in the intimate apparel sector has undergone a distinct shift.
With the widespread popularity of sports bras, the rising demand for shapewear, and the maturation of seamless manufacturing techniques, synthetic fibers—such as polyester and nylon—have gradually taken center stage.
They offered more than just elasticity; their durability, quick-drying capabilities, and precise control over shaping—technical attributes that, at the time, only synthetic fibers could reliably deliver—meant that "functional intimate apparel" remained deeply intertwined with synthetic fibers for a considerable period.
However, new changes are now emerging. As trend expert
Jos Berry noted in a presentation earlier this year,
natural materials are once again returning to the forefront of the conversation regarding intimate apparel.Driving this shift is a change in consumers' own tactile sensibilities. The number of people with sensitive skin is on the rise, and consumers are becoming increasingly conscious of the materials they wear to sleep at night—and the fabrics that rest against their bodies throughout the day.
Concurrently, advancements in textile technology have ensured that natural fibers are no longer "primitive." Through sophisticated blending with elastic and functional fibers, materials like wool, silk, and cotton can now retain their skin-friendly properties while simultaneously meeting modern demands for elasticity, durability, and ease of care.
Natural materials are no longer merely symbolic of a "return to nature"; they are evolving into a distinct pathway for material innovation.
Wool: From Winter Warmth to Year-Round Intimacy
Among the myriad natural materials available, Merino wool has garnered the most significant increase in attention in recent years.
Compared to traditional wool, Merino wool fibers typically have a diameter ranging from 17 to 21 microns. This exceptional fineness vastly improves its tactile quality, allowing it to be worn directly against the skin without causing itchiness or irritation. More importantly, this natural fiber possesses a suite of properties ideally suited for intimate apparel: thermoregulation, moisture-wicking capabilities, and inherent antimicrobial and odor-resistant qualities.
These characteristics have enabled wool to gradually expand its role, moving from being a standard choice for winter knitwear to becoming a foundational material for base layers in the sports and outdoor sectors.
The New Zealand brand Icebreaker was an early pioneer in capitalizing on this trend, utilizing Merino wool—rather than synthetic fibers—to develop base layers for hiking and outdoor activities, with a core focus on the material's natural performance attributes: staying odor-free even when sweating, and providing warmth when temperatures drop. Meanwhile, BRANWYN—an emerging American brand—has further integrated wool into women's everyday intimate apparel, launching a line of bras and panties centered on Merino wool that emphasizes all-day temperature regulation and breathability.
It is worth noting that most wool intimate apparel products currently on the market are not made of 100% pure wool. A common material composition typically consists of:
80%–85% Merino Wool
10%–12% Nylon
3%–5% Spandex
This composition preserves the natural properties of wool while simultaneously addressing issues regarding fiber durability and elasticity.
The wool component handles skin-friendliness and thermoregulation; the nylon enhances abrasion resistance and structural stability; and the spandex provides the necessary stretch for a close, contoured fit. This combination elevates wool from a mere "natural material" to a "functional material endowed with natural attributes"—a transformation that has been key to its resurgence and renewed acceptance within the intimate apparel sector.
Silk: Repositioning a Naturally Luxurious Material
If wool represents "natural functionality," then silk embodies a distinct value: the experience of natural luxury within intimate apparel.
As a protein-based fiber, silk boasts exceptional skin-friendliness and a smooth, silky touch. Its surface structure shares certain similarities with the amino acid composition of human skin, leading it to be widely regarded as one of the most suitable natural materials for direct contact with the body.
Within the realm of intimate apparel, silk has long been a staple for high-end sleepwear,
lingerie, and base layers; however, in recent years, the scope of this material's application has begun to expand.
→ Functional Blends
On one hand, the development of functional blends has helped shed silk's reputation for being "delicate" or high-maintenance.
Combining silk with spandex allows products to retain their soft texture while offering improved fit and durability. Furthermore, blends of silk and wool have garnered particular attention within the high-end base-layer market—here, the wool provides thermoregulation while the silk contributes a refined, delicate feel, creating a perfectly complementary synergy.
→ Expanded Usage Contexts
On the other hand, the expansion of usage contexts is also driving Silk's resurgence.
Over the past few years, market demand for high-quality loungewear has seen continuous growth, as consumers increasingly seek garments that offer both the comfort required for relaxing at home and the versatility needed for impromptu outings. The inherent luster and elegant drape of silk align perfectly with this "light home living" trend, bringing it back into the spotlight for both design brands and consumers alike.
Cotton: From Basic Material to Sustainable Narrative
Among all natural fibers, cotton remains the most ubiquitous and established material for intimate apparel. Its key strengths lie in its natural moisture-wicking and breathable properties, as well as its exceptional skin-friendliness—qualities that have long made it a staple choice for underwear, bra linings, and loungewear.
However, precisely because of its ubiquity, cotton was for a time perceived as lacking technological innovation; when compared to rapidly evolving functional fibers, it appeared somewhat "traditional."
Today, cotton is reclaiming the spotlight through several key avenues:
01 Sustainable Narratives
The growing popularity of concepts such as organic and recycled cotton has successfully integrated cotton into brands' sustainable material portfolios. In European and North American markets, consumers now scrutinize labels for organic cotton much as they would select organic produce at a supermarket—a shift in consumer habits that has compelled brands to re-evaluate the true value of cotton.
02 Functional Blends
Combining cotton with spandex resolves the issue of pure cotton’s lack of elasticity; meanwhile, blends incorporating cotton with Lyocell or Modal retain the familiar "cotton feel" while delivering a smoother touch and superior moisture-wicking performance.
03 Lifestyle Integration
Against the backdrop of "comfort in dressing" becoming a key consumer priority, cotton—as the most widely proven skin-friendly material—has re-emerged as the foundational pillar for everyday intimate apparel.
Cotton may no longer be the "newest" material on the block, but it remains an indispensable foundation within the ecosystem of intimate apparel.
The Next Frontier for Natural Materials
As consumers increasingly prioritize physical comfort and sustainable lifestyles, intimate apparel has emerged as one of the most direct arenas for demonstrating the intrinsic value of materials.
Wool offers natural thermoregulation capabilities; silk provides a delicate, luxurious tactile experience; cotton establishes a foundation of essential comfort, while functional fibers imbue these natural materials with elasticity and durability. The synergy between these diverse materials is currently shaping a new paradigm for intimate apparel materials.
Within the global textile supply chain, this evolution also signals the emergence of a new thematic dialogue: how natural materials are being redefined within the context of modern technology and the international marketplace.
As a specialized trade show platform dedicated to materials and innovation in intimate apparel,
Interfilière remains steadfastly focused on tracking material trends, technological advancements, and the evolving demands of the global market. From functional fibers to sustainable materials—and from guiding international trends to realizing "Made in Asia" production—this platform remains steadfastly committed to connecting global industry resources and driving the practical application of material innovation within the intimate apparel sector.
It is against this backdrop that natural materials have emerged as one of the key focal points of this year's exhibition. At
Interfilière Shanghai 2026, we will feature a dedicated thematic zone titled "Nature, Next to Skin," highlighting the following key areas:
The application of wool in athletic base layers and essential intimate apparel
The design potential of silk in high-end intimate products
Innovations in cotton regarding comfort and sustainability
The exhibition zone will also showcase the
latest fabric solutions featuring blends of natural fibers with elastomeric and functional fibers. Through material displays and trend analyses, we aim to demonstrate the newfound value that natural materials bring to contemporary intimate apparel.
In the realm of intimate apparel, the embrace of natural materials represents not merely a simple return to tradition, but rather a sophisticated evolution in material science—a transformation that holds the potential to redefine the most intimate relationship we share with our clothing.
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