为什么现在的内衣，长得都差不多？

Core Insights - Triumph Group's withdrawal from the Chinese market marks a significant shift in the lingerie industry, indicating the end of the traditional underwire era and reflecting changing consumer preferences [1][2]. Market Overview - Triumph's peak sales in 2015-2016 reached 3.5 billion yuan with over 900 offline stores, but the brand is now exiting the market as consumer demand has evolved away from traditional underwire models [2]. - The overall lingerie market in China is experiencing stagnation, with online sales projected to reach over 20 billion yuan in 2025, but with only a 2.6% year-on-year growth, indicating a shift to a mature market with no structural growth [2]. Consumer Behavior - There has been a significant shift in consumer preferences from underwire to wireless and size-free lingerie, leading to a market characterized by intense competition and homogenization [2][6]. - The traditional model of detailed sizing and professional in-store guidance is becoming obsolete as consumers increasingly prefer online shopping, with 81.9% purchasing lingerie online [5]. Competitive Landscape - New brands like Ubras and蕉内 are rising, focusing on size-free designs that simplify the purchasing process and align with modern consumer values of comfort and self-acceptance [6][9]. - The market is witnessing a shift where brands are expanding into adjacent categories like loungewear and activewear as single-category growth becomes challenging [15][17]. Innovation and Challenges - The lingerie market is facing a lack of innovation, with many brands relying on marketing rather than product development, leading to a homogenized product offering [18][21]. - Future opportunities for innovation may lie in functional materials and fashion-forward designs, moving beyond the current size-free trend to cater to specific consumer needs [22][24].