The ABS vs PBT keycaps argument is usually settled before it starts: PBT is the good one, ABS is the cheap one, buy PBT. That is roughly true of the plastic that comes free in a keyboard box, and roughly false everywhere above it. Plenty of the most sought-after keycap sets in the hobby are ABS, and a thin, hollow PBT set will disappoint you more than a thick doubleshot ABS one.
What actually separates the two is narrower than the reputation gap suggests, so here is what the difference costs you, how to tell which material you already own, and which sets earn the money on either side.
The Short Answer
Buy PBT if you type all day and hate shine. ABS develops a glossy, slightly greasy patch on the keys your fingers land on most. It is the single most visible way a keyboard ages, it starts within months on heavy use, and it does not come off — cleaning your keycaps removes the oils but not the polish underneath.
Buy ABS if you want a specific colorway or crisp doubleshot legends. ABS takes pigment better and moulds to tighter tolerances, so the sharpest legends and the most accurate colors in the hobby are usually ABS. You are trading long-term looks for immediate ones.
Ignore the material entirely if the set is thin. Wall thickness and profile change the sound and feel of a keyboard far more than the choice of plastic does.
ABS vs PBT Keycaps at a Glance
| ABS | PBT | |
|---|---|---|
| Texture | Smooth, slightly slick | Dry, fine matte grain |
| Shine over time | Develops gloss on used keys | Resists gloss for years |
| Sound | Higher-pitched, brighter | Deeper, more muted |
| Legends | Doubleshot; crisp, sharp edges | Doubleshot or dye-sublimated |
| Color range | Wider, more accurate pigments | Harder to dye; light colors are trickier |
| Warping | Holds shape well when moulded | Can warp slightly in moulding |
| Typical use | Stock caps and premium designer sets | Most enthusiast and mid-range sets |
The row people miss is the last one. ABS occupies both ends of the market — the free caps in a budget board and the group-buy sets people wait six months for — while PBT owns the broad middle. A set being ABS tells you almost nothing about its quality on its own.
How to Tell If Your Keycaps Are PBT or ABS
Four checks, in order of reliability:
- Look up the spec. Any set worth buying states its material. This settles it.
- Feel the surface. PBT has a faint dry grain, like very fine sandpaper you can only just detect. ABS is smooth and slightly waxy.
- Tap two caps together. ABS gives a brighter, higher click. PBT sounds duller and lower. Do this with two caps from the same set — comparing across profiles proves nothing.
- Check the worn keys. If the E, A, S and spacebar are noticeably shinier than the F-row on a board more than a year old, they are almost certainly ABS. PBT can eventually polish too, but it takes far longer.
The one test not to trust is price. Cheap PBT sets exist and expensive ABS sets exist, in quantity.
What ABS Actually Gets Right
The clearest evidence that ABS is not a downgrade is that KBDfans sells ABS sets under the brand name PBTfans. The house brand built its reputation on PBT and still moulds some of its most-wanted colorways in ABS, because certain finishes — semi-transparent bodies, precise pastels, deep saturated blues — either cannot be done in PBT or come out muddy when they are.
ABS also holds its dimensions better in the mould. That means tighter, more consistent stems, less cap wobble, and doubleshot legends with genuinely sharp edges rather than the slight softness dye-sublimation can leave behind.
PBTfans Fairy R2
Semi-transparent doubleshot ABS in Cherry profile with a soft pastel palette. This is the case for ABS in one set: the translucency and the pastel accuracy are the reason it exists, and neither would survive a switch to PBT. Doubleshot legends mean the characters are a second piece of plastic moulded through the cap, so they cannot wear off.
Pros: Colors PBT cannot reproduce cleanly, sharp doubleshot legends, semi-transparent bodies work with backlighting Cons: ABS, so it will gloss on your most-used keys eventually
PBTfans Tape & Radio
Doubleshot ABS in Cherry profile, built around 1980s Sony sports-player colors. The set ships PC spacebars in the spacebar kit, which is a third plastic again — polycarbonate, chosen there for its clarity rather than its feel. A good demonstration that serious sets pick a material per part instead of committing the whole kit to one.
Pros: Distinctive retro palette, crisp doubleshot legends, wide kit coverage Cons: ABS shine on heavy-use keys, and the accent colors are opinionated
Where PBT Genuinely Wins
Shine resistance is the real argument, and it is a strong one. PBT is a denser, stiffer polymer that resists the finger oils and micro-abrasion that polish ABS smooth. On a board you type on eight hours a day, that difference shows up within a year and never reverses.
The texture matters more than people expect too. That fine matte grain gives your fingertips something to register against, which most typists read as more controlled — particularly on a uniform profile like XDA where every row sits at the same height.
PBT is also the material dye-sublimation needs. Dye-sub drives ink into the plastic rather than moulding a second layer through it, which allows detailed multi-color artwork and five-sided legends that doubleshot cannot produce.
PBTfans 9009
Doubleshot PBT in Cherry profile, recreating the retro beige with muted green and salmon accents of the old Cherry G80-9009. The set most often recommended as a first move away from stock keycaps: classic enough to suit almost any case color, and doubleshot PBT means it resists both shine and legend wear.
Pros: Doubleshot legends in PBT, colorway that suits nearly any build, MX-compatible Cons: Cherry profile is sculpted, so it is not a drop-in match for uniform-profile boards
PBTfans Clarvoy
Cherry-profile dye-sublimated PBT at roughly 1.3mm thick, with glass microspheres mixed into the plastic for a denser, fuller sound and a skin-like surface. If you are chasing the deep sound people call thock, this is the set on this page that gets there — and it does so through thickness and fill, not through the letters P, B and T.
Pros: Genuinely thick walls, distinctive textured finish, dye-sub artwork Cons: Dye-sub limits how light the base color can go, and thick caps sit slightly higher
Akko Red Fuji
A 161-key JDA-profile PBT set, dye-sublimated with Hokusai woodblock artwork in deep red and cream. The key count is the point: it covers 60% through full-size with Mac keys included, so one set follows you across boards. Detailed pictorial legends like these are exactly what dye-sub on PBT does and doubleshot cannot.
Pros: Huge layout coverage, detailed dye-sub artwork, PBT shine resistance Cons: JDA is a spherical-top profile, so it feels different from the Cherry caps most boards ship with
Do ABS Keycaps Sound Better? Which Is More Thocky?
Neither material owns a sound. Wall thickness does most of the work, profile does the rest, and the case and mounting style do more than the keycaps do at all.
The generalization that PBT sounds deeper holds only because PBT sets are on average thicker than ABS sets. A 1.5mm ABS cap will sound lower and fuller than a 1.0mm PBT cap every time. If sound is what you are buying for, read the stated wall thickness and ignore the plastic — then look at the tall profiles, since a taller cap encloses more air and drops the pitch further. Our keycap profiles guide covers how much height changes.
Is PBT More Expensive Than ABS?
At the bottom of the market, yes — the cheapest full sets are thin ABS, because it is the cheapest thing to mould. Above that the pattern breaks completely. Designer doubleshot ABS sets from the same makers cost the same as their PBT sets or more, because the price is set by the design, the kit coverage and the production run, not by the pellets.
The useful buying rule is that anything genuinely cheap is thin ABS, and thin is the actual problem.
ABS vs PBT Keycaps for Gaming and RGB
This is the one use case where ABS has a clear technical advantage. Shine-through legends need light to pass through the cap, and translucent bodies with opaque legends are far easier to mould in ABS and polycarbonate than in PBT. If per-key RGB is the reason you bought the board, a PBT set will usually dim it.
Akko Glassy Carbon Fiber
A 126-key Cherry-profile set with a translucent carbon-fiber texture and doubleshot PC+ABS legends that resist oil and do not fade. The translucent build is what lets RGB through, and it covers 60%, 65%, 75%, TKL, 96% and full-size layouts across six colorways.
Pros: Genuine shine-through, oil-resistant doubleshot legends, broad layout coverage Cons: Translucent caps show dust and fingerprints more readily than opaque PBT
Beyond ABS and PBT
Two other materials come up often enough to be worth naming. POM is smooth to the point of feeling slippery and extremely durable, mostly seen in higher-end custom sets. Ceramic and metal caps are usually bought as accents rather than full sets — both are heavy, both change the sound noticeably, and metal in particular gets cold. Resin artisans are single accent keys, not a material choice for a whole board.
The Verdict
For most people, most of the time: PBT. If you type for a living, the shine resistance alone justifies it, and the broad middle of the market — where the sensible sets live — is PBT anyway. Start with a doubleshot PBT set in a profile that matches your board and you will not need to think about this again.
Choose ABS deliberately, not by default: when a specific colorway only exists in ABS, when you want the crispest possible doubleshot legends, or when shine-through RGB is the point of the build. And when you are comparing two sets on a page, check the wall thickness before you check the plastic — that number predicts how a keyboard will sound far better than the ABS vs PBT keycaps label does.
Ready to pick a set? Browse our PBT keycaps shortlist for the shine-resistant options, or the full keycaps hub for every profile and style we cover. Already have a set on the way? Removing your old keycaps takes about five minutes if you pull straight up.