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Fashion Design Portfolio

Explore a curated selection of activewear, streetwear, team kits and more

Each project showcases how I combine functionality, brand storytelling and technical design—from CADs and tech packs to sampling and production. Filter by category to find relevant work.

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“Brilliant service, Communicating with Jonathan is quick and easy, he understood the brief and provided a first class job with the least amount of fuss I've ever encountered. Highly recommended”

Phil Kewleyhttps://www.rolfskeldon.com/

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ActivewearFashionSportswear

Cardiofreak Mens Activewear Collection 2017 | J Mitchell Design

In 2017, I designed the debut mens activewear range for Cardiofreak, a performance-focused brand built around cardio training. The collection was created for athletes training both indoors and outdoors, with a focus on technical function and trend-led style. Featuring running shorts with mesh panelling, muscle-fit performance tees, breathable vests, and versatile track pants, the range combined performance fabrics, ergonomic cuts, and bold colour stories. The project balanced comfort, confidence, and cutting-edge training wear.
Model wearing grey melange sustainable loose fit cargo sweatpants from Rolf Skeldon’s 2025 collection, designed by J Mitchell Design and made in the UK.
FashionSportswearStreetwear

Rolf Skeldon – Sustainable Luxury Menswear Joggers and Shorts

For Rolf Skeldon’s 2025 collection I created fully bespoke men’s joggers and shorts that define the brand’s sustainable luxury direction. Designed and manufactured in the UK, the project combined refined aesthetics with practical functionality. I handled trend research, CADs, tech packs and sample development, working closely with local makers to ensure premium fit, structure and lasting comfort across all styles.
Puma Foundation SS09 menswear collection with logo tees, windbreakers, polos, and tech packs designed by Jonathan Mitchell – UK fashion designer
FashionSportswearStreetwear

Puma – Global Sportswear and Lifestyle Apparel Design

As Senior Sportswear & Lifestyle Designer at Puma’s global HQ, I led the Sports Leisure Team and developed global collections that sold over 6 million units per season. My work included performance apparel, streetwear, SMU collections, and retail exclusives for Footlocker and Intersport—blending commercial success with high-impact design.
Man standing on rocks in neon green tee and blue shorts designed by J Mitchell for Dare2b
ActivewearFashionSportswear

Dare2b – Mens Activewear and Sportswear

During a maternity cover role at Dare2b in Manchester, I worked on mens and kids skiwear and outdoorwear collections. From technical performance outerwear to fitness-led activewear, I handled the full process in-house — designing products for cold-weather sport, ski resorts, and UK retailers. I continued to freelance for Dare2b beyond the contract, supporting seasonal ranges with CADs and tech packs.
Crew neck golfwear jumper with back graphic tiger print
ActivewearFashionGolf wearSportswearStreetwear

4 UNDER – Golf Brand Collection Design

4UNDER was a disruptive golfwear start-up blending performance fabrics with streetwear style. I created their full menswear collection—designing everything from custom graphics and trims to CADs, tech packs and factory-ready garments. The brand’s bold visual identity combined tattoo culture, golf heritage, and modern fit detailing. Though it never went into full production, the project showcased my ability to merge lifestyle and performance in niche sports categories.
Team member in Maserati Racing blue quarter zip top leaning against fencing
FashionMotorsport ApparelSportswear

Maserati MSG Racing – Formula E Teamwear and Motorsport Apparel Design

As Head of Design at Uncommon, I helped Maserati MSG Racing develop premium motorsport merchandise and apparel that reflected the elegance and performance of the Maserati brand. From concept to CADs, I led the creative direction across teamwear, lifestyle products and fan merchandise—blending heritage styling with bold, technical details for a modern motorsport audience. The project combined high-end aesthetics with functionality for global Formula E fans.
Blue Dare2b ski jacket on snowy slope with skis and goggles, worn by model
ActivewearOuterwearSki

Dare2b – Skiwear and Outdoorwear Design for Mens and Boys

During a maternity cover role at Dare2b in Manchester, I worked on mens and kids skiwear and outdoorwear collections. From technical performance outerwear to fitness-led activewear, I handled the full process in-house — designing products for cold-weather sport, ski resorts, and UK retailers. I continued to freelance for Dare2b beyond the contract, supporting seasonal ranges with CADs and tech packs.
Close-up of Dripmoda light blue quarter zip top designed by J Mitchell Design, showing brand logo and high-performance fabric.
FashionOuterwearStreetwear

Drip Moda – Technical Streetwear Brand Design

Drip Moda is a technical mens streetwear label built around bold cuts, premium trims, and considered detail. I worked with the founders from concept to launch, helping to translate their vision into a high-performance fashion collection. My support included CAD design, tech packs, graphic artworks, and direct liaison with suppliers through the sampling and manufacturing phases. The result was a progressive, urban collection with real attitude and commercial strength.
Sky Tempesta racing team members from behind wearing white branded gilets and hoodies at a motorsport event
Motorsport ApparelSportswearTeamwear

Uncommon – Motorsport Merchandise and Teamwear Design

Uncommon is a UK-based apparel brand specialising in motorsport and esports merchandise. As Head of Design, I led concept development and created high-performance teamwear, fanwear, and capsule ranges for clients including Mahindra Racing, Envision Racing, Caterham Cars, and G2 Esports. I managed all stages from CADs and tech packs to production liaison, helping shape collections that blended brand identity with technical functionality.
Rear view of Scar Tissue graphic t-shirt worn by cyclist, designed by J Mitchell Design
FashionSportswearStreetwear

Scartissue & FDS – UK Streetwear Design

Between 2013 and 2020, I collaborated with Fashion Design Solutions as a freelance designer. Based in Brighton, I worked on streetwear and menswear collections for brands including Scartissue, Aces Couture, Chaptr, Judas Sinned, and other start-ups. I handled everything from research, design, CADs, and tech packs to branding, helping bring their visions to life through commercially strong, trend-led collections.
AI-generated image of mixed-gender runners wearing printed technical activewear in a jungle setting
ActivewearFashionSportswear

Hurricane Point – Running Brand Design Concept

Hurricane Point was a start-up running brand focused on technical design with a bold visual direction. I supported the brand from concept to sampling, delivering a full design service including research, CADs, trend boards, tech packs, and factory-ready files. Although the project didn’t proceed to production, the collection blended performance-led activewear with rich, AI-inspired storytelling—positioning the brand for a strong launch.
ActivewearFashionSportswear

Fulling Mill Fishing and Angling Sportswear | J Mitchell Design

J Mitchell Design created a focussed capsule for Fulling Mill that brings fishing and angling culture into modern sportswear. The project covers graphic T shirts and baseball caps with strong outdoor identity, clean branding and premium trims. Silicone badges, woven labels, embroidery and two colour screen prints deliver a durable look and feel. The range supports Fulling Mill’s Raising the Game message with performance friendly fits and easy everyday wear for anglers on and off the water.
Sportswear design for Wolves FC by J Mitchell Design, created for official club store in collaboration with Ming Shanghai
ActivewearFashionSportswearStreetwearTeamwear

Wolves Football Club – Official Merchandise Design

I collaborated with the retail team behind Wolves FC to design official club merchandise and assist with manufacturing. The products were sold at JD Sports across the UK. My involvement covered design development, product CADs, and supplier liaison—translating football culture into bold, fan-driven apparel and accessories that connected with supporters on and off the pitch.
Woman in teal activewear holding a Moda-branded celebration cake
ActivewearFashionWomens

Moda Active – Women’s Activewear Brand Launch

Moda Active is a women’s activewear start-up focused on bold, body-confident sportswear. I worked closely with the founders to develop their debut collection—creating detailed CADs, tech packs, and graphic artwork. I also supported the sampling and manufacturing process, ensuring their product vision translated into quality, wearable performance apparel. The result was a confident, modern collection built for movement and identity.
Two male models wearing Reflo Golfwear on a golf course at sunset, styled in printed performance polos and caps
ActivewearFashionGolf wear

Reflo Golfwear – Sustainable Golf Apparel with a Streetwear Edge

Reflo Golfwear is a sustainable golf brand with a bold, modern vision. I supported their launch collection by designing performance-focused apparel that merges technical activewear with streetwear styling. From CADs and tech packs to graphics and sampling, I helped bring their brand identity to life through functional, eco-conscious design.
Nermina with horse wearing Equidae London equestrianwear, designed by J Mitchell Design
ActivewearEquestrian ClothingFashion

Equidae London – Launching an Equestrianwear Brand

Equidae London is a luxury equestrianwear start-up launched by Nermina Pieters. I worked closely with her on every stage of the brand’s development, from concept and market research to technical design and final sampling. My role covered mood boards, graphics, CADs, tech packs, trims, fittings, and supplier liaison—helping transform her vision into a refined and contemporary equestrian collection rooted in premium design and functional detail.
Plymouth Argyle FC lifestyle collection designed by J Mitchell Design, featuring premium clubwear with a refined casual aesthetic
FashionSportswearStreetwear

Plymouth Argyle FC – Capsule Collection & Sportswear Design

I worked with Kevin Luo and the team at MING Shanghai on football club retail projects across the UK. For Plymouth Argyle, I designed outerwear, sportswear, and activewear collections tailored to the club’s identity. My role spanned design, technical packs, manufacturing liaison, and concept development for both on-pitch and fan-focused capsule collections.
White hoodie from Collective with red and green graphic details, worn during casual shoot with food collab
FashionSportswearStreetwear

Collective Bikes – Streetwear Design for a Cycling Community

I worked closely with the team at Collective Bikes to design streetwear-inspired apparel that resonated with their loyal BMX and cycling community. My role included apparel concepting, CAD creation, graphics development, and manufacturing support to bring bold, functional gear to market that captured the energy of the brand and its riders.
Romelu Lukaku celebrating in an Everton FC football kit designed by J Mitchell for Umbro, featuring the Chang sponsor logo and club crest, during a Premier League match.
ActivewearSportswearTeamwear

Umbro – Football Kit & Teamwear Design

As a full-time Performance Activewear and Sportswear Designer at Umbro, I created football kits and teamwear for clubs like West Ham, Everton, and PSV. I managed CADs, tech packs, graphics, and seasonal ranges, helping shape the brand’s inline collections and SMUs across multiple global markets.
Caterham Cars motorsport gilet, technical fashion designer company UK, J Mitchell fashion design
FashionMotorsport ApparelSportswear

Caterham Cars – Motorsport Apparel and Merchandise Design

Caterham Cars is an iconic British motorsport brand known for its lightweight racing vehicles. During my time as Head of Design at Uncommon, I worked closely on the Caterham merchandise and apparel range, helping shape high-quality collections that reflected the brand’s rich racing heritage. I supported everything from CADs and design development to production planning for lifestyle apparel and teamwear.
Three women in DIVA activewear posing for a selfie after an outdoor workout in Kuwait, wearing leggings and cropped tops, holding water bottles and shakers.
ActivewearSportswearWomens

Diva – Womens Activewear Design & Launch Support

Diva is a women’s activewear start-up focused on modern performance with feminine flair. I helped bring the brand to life by designing bold, technical pieces that fused function with style. I delivered 2D CADs, artworks, and full tech packs and also supported the team through sampling and manufacturing phases to ensure a clean and confident product launch.
Model wearing a Sloth Clothing graphic t-shirt, seated in front of a wall covered in gig posters, with a Mondrian-style painted face, holding a burger and chips.
FashionSportswearStreetwear

Sloth Clothing

Sloth is a fashion label founded in Brighton in 2010. Built around skate culture, bold graphics, and anti-hustle energy, the brand launched as a streetwear label and has evolved over the years into a sportswear and activewear concept.
ONEXU grey, black and white panelled hoodie worn by male model freestyle juggling – designed in Ireland
FashionSportswearStreetwear

OneXu – Streetwear Brand Launch Support

OneXu is a bold streetwear brand based in Ireland. I supported their journey from early concept through to final product—creating tech packs, CADs, artworks and production-ready files that defined their look and feel. From branding to sampling, I helped shape a graphic-led collection built for confident expression.