The right UV DTF cup wrap size comes from your actual cup, not a chart. Measure the diameter where the wrap will sit, multiply by pi (3.14) to get the circumference, and subtract a small gap so the ends don't overlap. Measure the straight, untapered height for the wrap's height. Most drinkware tapers or curves, so a measured cup beats any generic size.
- Wrap length
- Diameter × 3.14, minus a gap
- Wrap height
- Straight section only
- Libbey 16 oz can glass
- 5.25 in tall, 2.75 in top, 2.5 in bottom
- Best rule
- Measure your own cup
Why there's no one size that fits
A "16 oz tumbler" can mean a dozen different shapes. Brands differ, the same brand changes molds, and almost nothing is a perfect cylinder. A wrap sized for one 16 oz cup can be half an inch short on another. That's why the most reliable cup wrap size is the one you measure off the cup you're actually decorating.
UV DTF also behaves differently from vinyl on curves. The decal is a thin layer of cured ink and adhesive with no backing material, so it conforms well to gentle curves. But it can't stretch. If the surface tapers, a straight rectangular wrap will wrinkle or gap at one end.
How to measure a cup for a wrap
- Find the straight zone. Look at the cup from the side. Mark where the wall starts curving in at the top and the bottom. The wrap belongs between those marks. That distance is your maximum wrap height.
- Measure circumference directly. Wrap a soft tape measure, or a strip of paper you then lay flat, around the cup in the middle of the straight zone. This is more accurate than measuring diameter.
- Or calculate it. If you only have a ruler, measure the diameter and multiply by 3.14. A 3 inch diameter gives about 9.42 inches around.
- Measure at the top and bottom of the zone, too. If the two circumferences differ by more than a little, the cup tapers and you'll want a curved template (see below).
- Subtract a gap. Leave a small gap where the ends meet, typically around a quarter inch, so the ends don't overlap and you have room to line up a seam. Overlapping UV DTF edges can lift.
- Account for handles. On mugs and some tumblers, subtract the handle's width plus a margin on each side. The wrap goes around the open part of the cup only.
Verified example: the Libbey 16 oz can glass
The beer can shaped glass is one of the most popular UV DTF blanks. Per restaurant supply listings for Libbey item 209 (KaTom and WebstaurantStore both publish the manufacturer specs), the 16 oz can glass measures:
| Spec | Libbey 209, 16 oz |
|---|---|
| Height | 5.25 in |
| Top diameter | 2.75 in |
| Bottom diameter | 2.5 in |
| Maximum diameter | 3 in |
| Capacity | 16 oz, brimful |
Run the math on that 3 inch maximum diameter and you get about 9.42 inches around the widest part. The glass narrows toward the rim and the base, so the wrap that sits flat will be shorter than the full 5.25 inch height. Copycat "can glasses" from other brands look similar but aren't always the same size, so treat these numbers as a check on your own measurements, not a substitute for them. The listing also notes individual pieces can vary slightly.
Straight wraps vs curved wraps
| Cup shape | Wrap shape | What happens if you guess |
|---|---|---|
| Straight wall (true cylinder) | Rectangle | Fits cleanly |
| Slight taper | Gentle arc | A rectangle wrinkles at the narrow end |
| Strong taper or cone | Arc, or use separate decals | Large gaps or folds |
| Bulged middle (like a can glass) | Keep wrap in the straight band | Edges lift where the curve starts |
To make a template for a tapered cup, wrap a sheet of paper around the straight zone, tape it, and trace along the top and bottom edges of the zone with a pencil. Unroll it. The curved shape you've drawn is your wrap outline. Scan or photograph it flat and use it as a guide layer in your design software.
Designing the wrap file
- Size the canvas to the measured wrap. Length is your circumference minus the gap. Height is your straight zone.
- Keep art away from the seam. Put a natural break, like a gap in a pattern, where the ends meet. Text that crosses the seam rarely lines up perfectly.
- Full wraps vs panels. A wrap doesn't have to go all the way around. Two or three separate decals around the cup are easier to apply and more forgiving on curved shapes.
- Resolution: transparent PNG, around 300 DPI at the final size.
- Transparency: anything that isn't transparent prints, and UV DTF has no backing to hide a box.
Applying a cup wrap
UV DTF goes on with pressure, not heat. Clean the cup with rubbing alcohol and let it dry. Peel the backing, line up one end of the wrap, and roll the cup across it slowly while pressing from the center outward so air escapes. Burnish firmly, then peel the top film back slowly at a low angle. Our full UV DTF application guide covers the details, and removal covers the fix if you misplace one.
New to the process? Start with what UV DTF is and how it differs from regular DTF, which is for fabric, not cups.
FAQ
What size is a 20 oz or 30 oz tumbler wrap?
It depends on the brand and model. Two 20 oz tumblers can have noticeably different diameters and tapers. Measure the cup you have.
Can a UV DTF wrap go on a stainless steel tumbler?
Yes. Smooth stainless, powder coat, glass, and hard plastic are all common surfaces. Clean the surface well before applying.
Is a UV DTF cup wrap dishwasher safe?
Hand washing is the safer recommendation. Dishwasher heat and harsh detergents are hard on any decal, so most decorators advise hand wash only.
Why does my wrap wrinkle on one side?
The cup tapers and the wrap is a straight rectangle. Use a curved template or split the design into smaller panels.
Measure, then order
Bring your measurements and your design to the UV page. UV DTF is ordered through the form there and takes 3 to 5 business days.