The Sloth

The Sloth

The Sloth

Role: Founder, Designer

Years: 2019-2023

In 2019, I started The Sloth to rethink how we buy and sell secondhand clothing online. The internet was built for businesses to sell and consumers to buy. While buying takes one-click, selling peer-to-peer was a hassle. Even with popular resale platforms like Poshmark, tools that helped individuals to sell remained limited. Users still handled most of the work – setting up shops, creating listings, and managing shipping.

Resale is a $26 billion market growing at 23% yoy, and according to our survey of online shoppers, 58% of shoppers gave up creating a resale listing because they found the process too complicated. Of all the respondents who initiated creating a listing, the completion time was about 16 minutes and completion rate was below 50%. The number one reason for abandoning the process was inconvenience. Potential sellers often forgot what the product's name was, or how much they paid for.

I had a hypothesis that a tool to reduce the friction in resale that automate the workflow will meaningfully improve user experience and lead more people to shop & resell secondhand clothing. To better understand user pain points, the resale process, and the quirks of different marketplaces, I ran experiments offering to sell clothing for women.

Snapshots of my time as a founder selling and shipping used clothes.

I ended up reselling over 100 articles of clothing for 13 women in New York where I made on average ~$106 for them, and averted 120 pounds of textile waste from going to the landfill. I identified the most challenging process of reselling, found opportunities for automation, and learned that shoppers value clear product information, original photos, and detailed descriptions.

I built a Chrome Extension that functioned like Pinterest but specifically for clothing, capturing key product data like photos, descriptions, measurements, and materials. Within a month, I grew the user base by unlocking the niche group of professional stylists and aggregated over ~$1M in GMV and facilitated 100+ in resale transactions. A few weeks after launch, I raised from angels like Sahil Lavingia and Responsibly VC, and set out to develop a mobile app after receiving a feedback that users kept their purchase receipts inbox.

Chrome Extension & Web App

Chrome Extension & Web App

Resale & Shopping Automation Tool

Resale & Shopping Automation Tool

Iterations of Chrome Extension pop-up design showing the evolution of product from performing a single function to providing market context and a gentle reminder of useful functionality for users.

Mobile App Design

Mobile App Design

Discovery for Resale P2P Marketplace

Navigating discovery feeds on secondhand resale marketplaces can be frustrating. Poor photos and unclear product details make it hard for shoppers seeking inspiration. To address this, I streamlined the feed design, removing the usual promotional clutter found on e-commerce platforms. I envisioned a space where fashion-forward members can connect over what truly inspires them: fashion and design

See example

See example

See example

Initiating Resale from Product Details Page

What if we enable shoppers to resell directly from the product details page? I envisioned a new way for shoppers to create a resale listing with convenience and simplicity by embedding UI nudges in product details page.

Resale listing process

By pulling in details about the item from the PDP, a high quality resale listing can be created in minutes.

Listing preview

Despite a strong waitlist and brand partnerships, however, I couldn’t secure enough funding to keep the business running. I did not have enough funds to go through Google's Security Verification process. I made lots of mistakes as a first-time founder and in hindsight, I focused on the wrong channel (inbox via mobile app) instead of honing in on the strength (existing users for chrome extension).


I built a lot – a newsletter, a community, a Shopify plug-in, a Chrome extension, an Instagram account, a closet app using no-code tools, and a mobile app. I had a hypothesis and used a variety of approach to test it. I learned that resale is a challenging market, and my hypothesis required a more fundamental approach on data.


Building a business from scratch was no easy feat – I learned what it means to fail, persevere, face rejections, pivot, and still find a courage and focus to build again. I realized that I am passionate about building tools that make it easy for people to be kind and responsible. I wanted be a small part of the force that would contribute to making internet more equitable and sustainable, and decided to deepen my practice in design.

Get in touch

📧 namu.d.park@gmail.com