Kuboraum Sizing Guide: Bridge, Lens Width and Temple Length Explained
TL;DR — Every frame carries three numbers — lens width, bridge width and temple length, usually printed as something like 50-21-145. This guide explains what each one does for fit and shows real measured examples from the Kuboraum Masks in our catalog. One honest caveat up front: not every Kuboraum listing publishes its measurements, so the ranges here come from the subset that does (about 75 of our 134 frames). Across those, lens width runs roughly 39-57mm, bridge 14-28mm, and temple length is almost always 145mm.
Quick answer: what do the three sizing numbers mean?
Eyewear sizing is always three measurements in millimetres, in the same order: lens width (how wide one lens is at its broadest point), bridge width (the gap between the two lenses that sits over your nose), and temple length (the arm that runs from the hinge to behind your ear). A frame written as 50-21-145 has 50mm lenses, a 21mm bridge and 145mm temples. Those three numbers, read together, tell you far more about whether a frame will fit than the shape or the model name ever will. For a sculptural brand like Kuboraum, they are the difference between a Mask that sits perfectly and one that overwhelms your face.
Lens width: the number you feel first
Lens width is measured across the widest part of a single lens, and it is the figure most people notice on the face. A bigger lens width means a wider frame front and a bolder presence; a smaller one reads more compact and contained. Among the Kuboraum listings in our catalog that state measurements, lens width spans about 39mm to 57mm, and clusters right around 50mm — a properly medium footprint. The compact Mask K32 optical, at a 42mm lens, is one of the smaller fronts in the range, while the Mask H63 pushes to 57mm. Neither is "correct" — they are two ends of a deliberate spectrum, and which suits you depends on your own face width and how much presence you want.
Bridge width: the number that decides comfort
The bridge is the span between the lenses that rests on your nose, and it quietly controls whether a frame sits high and level or slides down all day. Too narrow and the frame pinches and perches; too wide and it drops. In our measured Kuboraum listings, bridge width runs from about 14mm to 28mm, with a median near 21mm. Most optical Masks sit in a 20-22mm band, which is a fairly standard, accommodating bridge. The interesting outliers are the sculptural frames: the wide-set Mask Z50 pairs a 27mm bridge with tiny 39mm lenses, because the whole design pushes the lenses apart to make room for its metalwork. That is a good reminder that bridge and lens width are chosen together as a composition, not independently.
Temple length: the number that rarely changes
Temple length is the arm, measured from the hinge to the tip that curves behind your ear. It is the most standardized of the three, and Kuboraum is a clear example: across every measured listing in our catalog, the temple is almost always 145mm, with only a handful of models at 140mm. 145mm is a comfortable, common adult temple length, which means temple fit is rarely the deciding factor with a Kuboraum — and if a temple ever needs to sit differently, the acetate arms can usually be gently heat-adjusted by an optician. In practice, once you know the lens and bridge feel right, the temple takes care of itself.
Real measured Kuboraum examples
Here are actual measurements pulled straight from the product listings in our catalog, written in the standard lens-bridge-temple order. Use them as reference points against a frame you already wear.
| Mask | Type | Lens–Bridge–Temple (mm) | Reads as |
|---|---|---|---|
| K32 | Optical | 42–22–145 | Compact, contained |
| K19 | Optical | 51–21–145 | Right at the catalog average |
| H91 | Sun (rimless) | 49–22–145 | Medium lens, low profile |
| P8 | Sun | 53–17–145 | Wide lens, narrow bridge |
| P63 | Optical | 56–17–145 | Large, statement front |
| Z50 | Sun | 39–27–140 | Tiny lenses, wide bridge (sculptural) |
Notice how the Mask P8 and Mask P63 both run a wide 53-56mm lens against a narrow 17mm bridge — a look that sets the lenses close together for a strong, concentrated front. The Z50 does the exact opposite. That is the whole point of reading the numbers: two Masks with a similar lens width can wear completely differently once the bridge is factored in.
How to use these numbers to size yourself
The most reliable trick needs no measuring tape. Find a pair of glasses you already own and love, look inside the temple arm or the bridge for a string like 50□20 145, and use those digits as your baseline. Then compare against the Kuboraum you are considering: a lens width within a few millimetres of your favourite will feel familiar, a wider one will read bolder, a narrower one more compact. If your current bridge is comfortable, look for a similar bridge number. It is not an exact science across sculptural frames — a Mask is meant to make a statement, not disappear — but the three numbers get you close, and a proper fitting closes the gap.
Why we are not claiming this is every Kuboraum's exact size
Straight answer: because it would not be true. Roughly 75 of the 134 Kuboraum frames in our catalog publish explicit measurements in their listings; the rest describe the design without printing the millimetres. So the ranges in this guide are drawn from that measured subset, and they are real — but they are examples and reference ranges, not a complete size chart for the entire collection. If you have your eye on a specific Mask that does not list its measurements, the honest answer is to ask us and we will confirm the exact figures before you commit.
FAQ
How do I read Kuboraum frame measurements?
Read them as three millimetre numbers in order: lens width, bridge width, then temple length. A Mask marked 50-21-145 has 50mm lenses, a 21mm bridge and 145mm temple arms. Comparing those three numbers to a frame you already wear is the quickest way to judge fit.
What is the average Kuboraum frame size?
Among the Kuboraum listings in our catalog that publish measurements, a typical Mask sits near 50mm lens width, a 21mm bridge and a 145mm temple. Lens width ranges from about 39mm to 57mm and bridge from about 14mm to 28mm, so there is genuine variety around that average.
Are all Kuboraum temples the same length?
Almost. Across every measured listing in our catalog the temple length is 145mm, with only a few models at 140mm. Because 145mm is a common adult temple length, temple fit is rarely the deciding factor, and acetate arms can usually be lightly heat-adjusted by an optician if needed.
Do all Kuboraum listings show their measurements?
No. About 75 of the 134 Kuboraum frames in our catalog publish explicit bridge, lens and temple measurements; the others describe the design without stating the millimetres. If a Mask you want does not list its size, contact Gazal Eyecare and we will confirm the exact measurements before you order.
The bottom line
Sizing a Kuboraum comes down to three numbers — lens width, bridge width and temple length — and the most useful of them is usually the bridge, because it decides comfort. The measured Masks in our catalog cluster around a medium 50-21-145, but the sculptural pieces break the mould on purpose, which is exactly why reading the numbers beats guessing from a photo. Browse the full Kuboraum collection at Gazal Eyecare, split it into optical Masks and sun Masks, and if you are between sizes, ask us to confirm the measurements before you buy.