Meet our Materials
We use American-grown, sustainably sourced Supima cotton, grown to meet the standards of the Better Cotton Initiative, which reduces the environmental impact of farming by using less water and pesticides.
We use a proprietary blend of TENCEL, known for its moisture wicking properties, comfort and durability. TENCEL is sustainably produced from renewable wood materials without use of pesticides or insecticides.
Oeko-Tex is a global third party standard on testing textiles for harmful substances. Our fabric has been tested and certified to be free from harmful levels of more than 100 toxins and chemicals.
We are a Seattle-based clothing brand dedicated to creating better basics for all genders. We're not interested in passing trends - we make classic staples that look and feel great, pair with everything in your closet, and never go out of style.
Liyin Kok and Rafael Soto- Proto101 Founders
We strive to offer sustainable alternatives to disposable “fast” fashion by sourcing eco-friendly fabrics, making durable garments in timeless silhouettes, and supporting an ethical supply-chain.
Hundreds of 5-Star Reviews
Commitment to Sustainability
Read our Impact Report
'One for one' trees planted
We plant one tree for every garment sold to neutralize our carbon footprint.
Proto101 ships our products in a compostable, biodegradable package that is made of 100% recycled materials.
Clothing built to last
Not only are our garments made with the highest-quality raw materials, they're also designed in classic sillhouettes that never go out of style so you can wear them again and again.