What Makes a Good Sublimation Blank
Every sublimation blank has one thing in common: a surface that accepts sublimation ink. For fabrics, that means polyester. For hard goods like mugs, coasters, and phone cases, it means a polymer coating applied to the surface. The quality of that coating, or the polyester content of that fabric, directly determines how vibrant and durable your finished product will be.
When you are buying blanks, you are really buying the coating or the fabric quality as much as the physical item. A cheap mug with an inconsistent coating will give you patchy prints. A well-coated mug from a reliable supplier will give you sharp, full-colour results every time. That consistency matters, especially if you are selling finished products to customers.
Mugs
The 11oz white ceramic mug is the single best-selling sublimation product in the UK, and for good reason. It is affordable to buy in bulk, easy to press with a mug press or mug wrap, and customers love personalised mugs for gifts. The standard 11oz size fits most mug presses without adjustment.
When buying sublimation mugs, look for consistent coating across the entire printable area. The coating should be smooth and even, with no thin patches or rough spots. It is worth testing a small batch from any new supplier before committing to a large order. Coating quality can vary between manufacturers and even between production batches, so find a source you trust and stick with it.
Beyond the standard 11oz, you can also get 15oz mugs, latte mugs, travel mugs, and colour-changing mugs. Each has slightly different pressing requirements, but the coating principle is the same. Browse our sublimation mugs collection to see the full range.
T-Shirts and Clothing
Sublimation t-shirts need to be 100% polyester and white or very light in colour. Sublimation ink is translucent, so it has no ability to show up on dark fabrics. A white polyester shirt gives you the full colour range, while a pastel shade like light blue or light pink will tint your design slightly.
The feel of the fabric matters to your customers. Modern polyester t-shirts are a long way from the shiny, scratchy polyester of decades past. Look for fabrics described as "soft touch" or "cotton feel" polyester. These have a brushed or peached finish that feels comfortable against skin while still accepting sublimation ink perfectly.
Beyond t-shirts, you can sublimate onto polyester hoodies, sweatshirts, vests, aprons, socks, and baby grows. The same rules apply across all clothing: 100% polyester, white or very light colours, and check the fabric quality before ordering in bulk. See our full sublimation clothing range for options.
Phone Cases
Sublimation phone cases are typically hard polycarbonate shells with a flat polymer-coated back panel. The coating accepts the ink, and the rigid surface means you get clean, sharp prints without any distortion.
The main thing to watch with phone cases is model compatibility. Phone manufacturers release new models frequently, and case dimensions change each time. Always check that the blank matches the exact phone model your customer needs. Keeping a small stock of the most popular current models (iPhone and Samsung Galaxy) covers the majority of orders without tying up too much cash in inventory.
Tote Bags
Sublimation tote bags are made from polyester canvas rather than the cotton canvas you would find in a standard shopping bag. The polyester accepts the ink directly, and the slightly textured weave gives the finished print a nice tactile quality. Tote bags press flat, which makes them one of the simpler products to get right. They are a good item to add to your range early on.
Coasters and Chopping Boards
These hard goods are typically made from MDF with a polymer coating on the top surface. Coasters come in round, square, and hexagonal shapes. Chopping boards are larger and make popular personalised kitchen gifts.
With MDF-based products, press pressure and time are important. Too little pressure and the ink transfer will be incomplete. Too much and you can scorch the coating. Follow the recommended settings from your blank supplier rather than guessing, and always do a test press with a new batch.
Take a look at our coasters and chopping boards for options.
Practical Buying Advice
Start small. Order a sample quantity of any new blank before buying in bulk. Press a few test pieces and check the colour accuracy, coating coverage, and durability after washing (for clothing) or regular use (for mugs and drinkware). This small upfront investment saves you from discovering quality problems halfway through a large customer order.
Store your blanks properly. Keep them in a dry environment, away from dust and moisture. Polymer coatings can absorb moisture from the air, which causes issues during pressing, including bubbling and uneven colour. If you are in a humid environment, consider pressing a blank with a clean sheet of paper for a few seconds before your actual transfer to drive off any absorbed moisture.
For a complete overview of how coatings and substrates interact with sublimation ink, read our guide on the science behind sublimation blanks. And to browse everything we stock, visit our full sublimation blanks collection.