CALMAR
Brands
Bananain
Chinese

Bananain

Country
China
Price
Entry
Founded
2016
Founder
Chongyu Zang, Zechen Li
Bananain (蕉内) was founded in Shenzhen in 2016 by Zang Chongyang and Li Zelong as a deliberate intervention into the Chinese underwear and basics category, which the founders had identified as structurally stuck between cheap commodity producers and overpriced Western imports. The Bananain bet was that Chinese consumers would pay a designer-basic premium for technical fabrics, considered fit engineering, and minimalist design language—the same proposition that had built Uniqlo into a global force but had never been executed at the Chinese underwear price point. The Bananain vocabulary settled around seamless engineered knits with bonded edges replacing visible elastic, modal-cotton blends with antibacterial finishes, and a graphic language built on the brand's lowercase wordmark and a tag-and-label system that treated underwear like a designed object rather than a commodity. The "Banana Power" t-shirt and the brand's signature seamless brief became flagship items, with retail expansion moving through Tmall flagship operations first, then physical stores in Shenzhen, Shanghai, and Beijing that read more like Muji or Aesop than conventional Chinese underwear retail. Bananain's market position got built up systematically through tier-one Chinese cities, with the brand using Xiaohongshu and Douyin content—rather than legacy fashion-magazine advertising—to communicate fit, fabric, and engineering credentials to a customer base that had aged out of fast-fashion underwear and into the Chinese millennial premium-basics segment. Collaborations with Disney, Sanrio, and Universal Music functioned as graphic capsules rather than aesthetic departures, with the brand's design DNA staying consistently minimalist. By the early 2020s, Bananain had grown into one of the defining Chinese DTC basics brands of the decade, sitting in a category alongside Neiwai, Particle Fever, and Maia Active that collectively redefined what Chinese consumers expected from domestic everyday clothing.

Shop Secondhand

Archive and rare Bananain pieces mostly circulate on the resale market. Japanese sites don't ship to China — buy via a proxy like Buyee; most Western sites ship internationally or are reachable with a US/EU forwarder.

How to buy secondhand →

Flagship Stores1

Shenzhen
Bananain HQ, Shenzhen, China

Timeline5

  1. 2016

    Bananain founded in Shanghai

    Zang Chongyu and Li Zechen launch Bananain (蕉内) as a tag-free underwear brand.

  2. 2019

    Tmall best-seller status

    Bananain becomes one of Tmall's top-selling Chinese underwear DTC brands.

  3. 2020

    Series B funding

    Raises Series B funding from investors including Yuanjing Capital at a unicorn valuation.

  4. 2021

    Thermal Series viral campaign

    The Hot Skin thermal underwear campaign featuring Zhou Dongyu drives breakout growth.

  5. 2023

    Offline flagship expansion

    Bananain accelerates offline retail with concept stores in Shanghai and Beijing.

Related Brands6