Cotton vs polyester for sublimation in Kenya is a material-compatibility decision before it is a design decision. Conventional dye-sublimation works with suitable polyester fabrics and specially coated hard products. If you already own cotton shirts, do not buy sublimation printing on the assumption that any fabric can receive the same result.
This guide helps teams and businesses check a proposed garment before purchasing blanks or approving a production run. For available project options, see Mocky's sublimation printing service. If your order contains several garment types, compare the broader merchandise branding options before settling on a single process.
Confirm the fibre composition before buying the blanks
Ask the garment supplier for the composition of the actual product you intend to order. Keep a photograph of its label and record the product reference. “Sports material,” “premium cotton” and “performance fabric” are sales descriptions that do not tell a printer enough about the construction being proposed.
Epson's sublimation overview identifies polyester fabric and polyester-coated hard surfaces as the compatible base for its dye-sublimation process. That does not mean every item described as polyester has been checked for your design or production workflow. Send a sample or product specification to the printer before purchasing a large quantity.
If a garment is a blend, ask what the proposed process can achieve on that exact composition. Do not interpret a successful result on one blend as a guarantee for another. The useful purchasing question is whether this fabric, in this colour and construction, can deliver the approved appearance for this particular order.
Understand why ordinary cotton changes the conversation
Conventional sublimation should not be presented as a direct like-for-like solution for untreated cotton. If a supplier proposes a coating, transfer layer or specialist system, ask them to identify what the finished decoration actually is and what care requirements apply. Evaluate the complete result rather than relying only on the word sublimation.
For existing cotton shirts, discuss alternatives such as screen printing or heat transfer printing. The appropriate choice depends on the artwork, garment and quantity. Send the actual design to the production team before asking for a comparison so each quotation addresses the same job.
This avoids a common purchasing trap: buying inexpensive blanks first and discovering later that the chosen process does not suit them. If the garments have already been bought, explain that constraint immediately. Ask for a sample assessment rather than requesting a production promise based only on a photograph of the shirt.
Discuss garment colour as part of the design
The base colour is part of the final appearance. A bright design approved against a white background may not look the same on a coloured garment. Ask the printer how the selected base interacts with the artwork and whether the intended light areas can be reproduced by the proposed process.
Mocky's sublimation service page explains that conventional sublimation does not print a white ink layer. For buyers, that means a design with white lettering or pale colours needs a deliberate discussion about the substrate. Do not approve a white-on-black digital mockup as proof that the same appearance can be produced using an unsuitable method.
Bring your brand colour references, but keep the approval tied to a representative sample where colour is important. A phone preview is useful for layout and spelling. It is a weaker basis for judging the exact interaction between printed colour and fabric. Ask what can be sampled and what variation you should expect before committing the full quantity.
Separate a printed blank from a cut-and-sew garment
A small logo placed on an existing polyester shirt is not the same production task as an all-over jersey made from printed panels. Explain whether you want to decorate an item you already own or commission a garment with an integrated design. The artwork preparation, sizing information and approval stages can differ.
For panel-based work, request the supplier's actual template and ask how the artwork relates to seams, joins and different garment sizes. Keep important wording away from uncertain boundaries until the production team has reviewed the layout. Do not reuse an unrelated online jersey template and assume it matches the proposed cut.
For an existing blank, identify the requested print area and ask whether the item can be handled appropriately. Seams, zips, buttons and the garment's shape may affect the available area. Obtain that assessment before promising your team a particular logo position or an edge-to-edge design.
Request a sample that answers the purchasing question
A sample should represent the garment and method you are actually buying. A supplier's attractive mug print does not demonstrate the result on a sports jersey. Likewise, a shirt in a different composition or colour may answer only part of your question. Ask what the sample proves and what remains untested.
Write a small assessment sheet before the sample arrives. Include the product reference, composition, garment colour, artwork version and intended use. Then check whether essential text is readable, whether the placement fits the item and whether the overall appearance matches the approved direction. Have the person responsible for the brand review it too.
Agree any wash assessment with the supplier and follow the finished item's care instructions. Record the observations rather than relying on memory. A single sample cannot promise unlimited durability, but it can reveal whether the chosen combination is suitable enough to proceed or whether the brief needs changing.
Compare quotations without mixing different products
Ask suppliers to price the same garment specification, quantity, print coverage and finishing requirements. An offer for printing onto customer-supplied blanks is not directly comparable to a complete garment supplied, decorated and delivered. State which service you require and check that each quotation addresses it.
Confirm the total payable in KES and whether design work, sample preparation, garment supply and delivery are included. If one supplier proposes another decoration method, ask why and request its own specification. A different method may solve a real material problem, but it should not be silently substituted in a quote comparison.
For broad budget context, consult our T-shirt and jersey printing guide, then obtain current pricing for the exact order. Published examples cannot replace a fresh quote for a particular fabric, design and quantity. Keep the approved sample reference attached to the purchase specification.
Prepare a brief that makes the decision easier
An illustrative enquiry might say: “We are choosing shirts for a staff sports event. The proposed blank is white polyester, and the design has a full-colour front graphic. Please assess the garment reference and artwork, recommend a suitable method and quote for a sample before the main run.”
Replace those details with the real composition, colour, quantity, dimensions and deadline. If you are comparing cotton and polyester, send both product references and explain what matters to the wearer, such as fit, feel or compatibility with an existing uniform. Do not choose the fabric solely because one decoration method happens to be available.
A useful brief contains these items:
Actual garment reference and fibre composition.
Base colour and available size range.
Artwork and requested print dimensions.
Whether blanks are supplied or need sourcing.
Quantity by size and any individual names.
Sample requirement and approval contact.
Delivery destination and required date.
Keep any changes in one revised document. If the blank supplier changes the product, ask the printer to reassess it before production. The order you approve should match the garment that will actually be decorated, not an earlier option that is no longer available.
Frequently asked questions
Can I use sublimation on ordinary cotton T-shirts?
Conventional dye-sublimation is not a direct equivalent for untreated cotton. Ask about a suitable alternative for the shirt you have. If a specialist coating or transfer system is proposed, request its specification, sample and care instructions before comparing it with other methods.
Is every polyester shirt suitable?
No blanket approval should be inferred from the fibre name. Ask the production team to assess the actual product, colour, construction and intended artwork. A material specification and representative sample provide a better basis for deciding than a generic catalogue description.
Can I use the same artwork for a mug and a jersey?
You can reuse the brand assets, but the layout should be prepared for each product's dimensions and production requirements. Ask for the appropriate template and approve each result separately. Product shape and viewing distance can change what is readable and where the design should sit.
What should I send Mocky first?
Send the garment reference, composition, colour, artwork, quantities and deadline through the branding and print quote form. If you have not bought the blanks, mention that. It gives the team an opportunity to resolve compatibility questions before your budget is committed to unsuitable materials.
