Custom T-Shirts

Custom T-Shirts Cut and Sewn for Your Brand

The t-shirt is the backbone of almost every merch line, clothing label and team order, and it is also the piece people judge most closely. A thin, boxy blank with a print on it feels like a giveaway. A tee cut and sewn to your spec, in the right fabric weight and fit, feels like a product people want to buy again. That is the difference Mailer Boxes Co makes.

We make custom t-shirts from 20 pieces per style, with sizes mixed, for clothing brands, streetwear startups, creators, restaurants, sports teams and companies. You choose the fit, fabric, color and decoration, and we send a free mock-up before anything is made.

Fits and Fabrics

• Regular fit for classic everyday tees and staff uniforms.
• Boxy and oversized cuts with dropped shoulders for streetwear.
• Cropped fits for women’s ranges and fashion drops.
• Fabric weights from 160 GSM lightweight jersey to 300 GSM heavyweight cotton that holds its shape.
• Fabrics: combed cotton, organic cotton, cotton-poly blends and tri-blends, garment-dyed or pigment-dyed for a lived-in look.

Decoration Methods

Screen printing is the best value for bold graphics on larger runs. Puff print adds raised texture, DTF and DTG handle full-color artwork at low quantities, and embroidery gives a clean, premium chest logo. You can combine methods, for example an embroidered chest logo with a large screen-printed back graphic.

Placements include left chest, full front, full back, sleeve, back neck and hem. Not sure which method suits your artwork? Choose “Not sure” on the quote form and we will recommend one.

Building a Collection

Tees pair naturally with custom hoodies and crewneck sweatshirts in the same colors, so a small brand can launch a full capsule from one supplier. For colder seasons, add thermal shirts to the range.

Who Orders Custom Tees

Clothing labels launching a first drop, creators selling merch to their audience, bands on tour, restaurants and cafés dressing staff, gyms selling member tees, and companies ordering event and onboarding shirts. Because the minimum is 20 pieces per style, you can test a design in a small run and reorder the winners.

Sizing and Quality

We work from a standard US size chart from XS to 3XL and can adjust body length, chest width and sleeve length to match a fit you already sell. Every order is checked for print placement, stitching and measurements before it ships, and fabrics are pre-shrunk so tees keep their size after washing. If you have a favorite tee, send it to us and we can match its fit.

Questions Customers Ask

What GSM should I choose for streetwear?

Most streetwear brands choose 240–300 GSM. It drapes well in boxy fits and feels substantial in the hand.

Can I mix colors in one order?

Yes. Each color counts as its own style, with 20 pieces per color and sizes mixed.

Will prints crack after washing?

Screen prints and DTF are cured to last many washes. We share care instructions with every order.

How Ordering Works

Tell us the style, fabric, colors, decoration and quantity on the quote form. Our minimum for t-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.