Custom Thermal Shirts

Custom Thermal Shirts and Long Sleeves

Thermal shirts are made from waffle-knit fabric that traps a layer of warm air while still breathing. They are a favorite for streetwear brands, outdoor and workwear labels, and cold-weather staff uniforms, because they look good worn alone or layered under a tee, flannel or jacket.

We make custom thermal shirts and long sleeves from 20 pieces per style, with sizes mixed, cut and sewn to your fit and decorated with your design.

Fabric and Construction

• Waffle knit in cotton or cotton-poly blends for texture and warmth.
• Ribbed cuffs and collars that hold their shape after washing.
• Fits: regular, relaxed and oversized; crew neck or henley.
• Colors: custom-dyed to your palette, including washed and vintage tones.

Decoration That Works on Waffle Knit

Textured fabric changes how prints look. Embroidery and woven patches sit cleanly on waffle knit and give a premium, workwear feel. Screen printing works well for bold graphics, and we may recommend a slightly heavier ink deposit to cover the texture evenly. Sleeve prints and back-neck logos are popular on long sleeves.

Pair It With

Thermals layer naturally under custom t-shirts and windbreaker jackets, and pair with beanies for a winter drop.

Who Orders Custom Thermals

Streetwear and workwear labels building autumn and winter ranges, outdoor and hunting brands, ski schools and resorts, breweries and coffee shops dressing staff in cooler months, and construction or trade companies looking for a warm, branded base layer.

Fit and Care

Thermals look best with a slightly fitted body and long sleeves that sit at the wrist or stack slightly. We can add thumbholes, longer cuffs or a relaxed body for streetwear. Waffle knit should be washed cold and dried low to keep its texture, and we include care guidance for your customers on request.

Questions Customers Ask

Are thermals warm enough on their own?

Yes for cool weather. In cold weather they work best layered under a jacket.

Can thermals be cropped?

Yes. Cropped thermals are popular for women’s ranges.

Does the waffle texture shrink?

We pre-shrink fabrics, so shrinkage after washing is minimal.

How Ordering Works

Tell us the style, fabric, colors, decoration and quantity on the quote form. Our minimum for thermal shirts is 20 pieces per style, with sizes mixed. We reply with a free mock-up and your price, and once you approve the mock-up we cut, sew and decorate your order, sending a progress update every week. Ask for a sample first if you want to check fit and fabric before bulk production.

Browse more t-shirts & tops, the full custom apparel range, or use the apparel quote form for multi-style orders.

Retail-Ready Finishing

Finish the order like a retail brand: add woven neck labels, printed hang tags and poly bags, then ship everything in custom branded mailer boxes printed to match. As a packaging company first, we handle the clothing and the box in one order, with one proof and one delivery.