Steph Thiel

Steph Thiel is a fit and sizing expert dedicated to creating inclusive apparel for every body, from preemie-sized infants to 6X adults and beyond. With over 15 years of experience as the founder of Steph Thiel Designs, she provides comprehensive services in size and fit strategy, patternmaking, technical design, and development, ensuring products transition seamlessly from concept to production. Steph’s expertise spans plus, tall, petite, adaptive, and unisex sizing, making her a leader in inclusive design. Passionate about precision and innovation, she leverages tools like CLO 3D and Gerber Accumark to deliver exceptional results for her clients in the apparel industry.

• ‍Owner, Fit & Sizing Expert, Technical Design & Development | Steph Thiel Designs (2016 - Present)‍
• Independent Business Owner & Designer | Rad Patterns (2016 - Present)‍
• Pattern Maker & Fit Consultant (Freelance) | Turtles and Tees Co. (2019 - Present)‍
• Designer & Technical Developer (Freelance) | Turtles and Tees Co. (2019 - Present)‍
• Instructor | Portland Fashion Institute (2021 - 2024)‍
• Manager of Fit & Technical Development | Cotopaxi (2022 - 2023)‍
• Senior Apparel Pattern Maker | Adidas (2020 - 2021)‍
• Manager Apparel Pattern Maker | Adidas (2017 - 2020)‍
• Pattern Maker - Training Apparel | Adidas (2016 - 2017)

Oregon State University | Bachelor of Science, Apparel & Textiles