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Thomas
Rectangular
KAT LECHATTOM
Size Guide, Fit Meaning & Frame Shape Guide
Everything you need to understand before choosing your frame — from lens width and bridge fit to acetate, temple length, face shape guidance, and which frame forms may suit you best.
Sizes: 47–60 mm Bridge: 10–21 mm Temple: 130–147 mm
How frame sizing is written
Lens Width □ Bridge – Temple Length
Example: 52 □ 18 – 145 mm
These numbers are often printed on the inside of the temple arm. If you already own a pair you love, compare those measurements with ours for the easiest fit decision.
Collection examples Frame Forms Across the Collection These example styles help customers understand the visual difference between your main frame forms.
Freddie
Round
Reine
Oval
Lami
Cat Eye
Bella
Square Cat Eye
Ellis
Geometric
01 Understanding the MeasurementsA frame can look beautiful from the front, but the bridge and temple length are what help it feel secure and comfortable throughout the day.
Lens Width
Lens width is the horizontal width of one lens in millimeters. It is the first number in the size series and usually the quickest way to understand whether a frame feels smaller, balanced, or more oversized.
Bridge/Nasal Bone
The bridge is the space between the two lenses where the frame rests on your nose. A smaller bridge fit usually feels narrower and more secure on slimmer noses, while a wider bridge provides more room and a more open fit.
Temple/Handle Length
Handle Length is the length of the side arms from the hinge to the tip behind the ear. It affects overall comfort, stability, and how neatly the frame sits on the side of the head.
02 KAT's Fit Ranges These ranges are written to help our customers understand the fit language used across your collection.
| Lens width | Fit meaning | Best for |
|---|---|---|
| 47 mm | Kids Fit | Small kids fit size. |
| 48–49 mm | Small/Narrow Fit | Smaller faces, more compact proportions, lighter visual presence. |
| 50–52 mm | Medium Fit | Balanced everyday fit for many face shapes. |
| 53–55 mm | Wide Fit | Broader faces, more coverage, stronger front profile. |
| 56–60 mm | Oversized/statement Fit | Fashion-forward silhouettes, more drama, larger visual presence. |
03 Frame Forms and Face Shape GuideFace shape guidance is a style tool, not a rule. The right choice also depends on personal taste, desired coverage, and whether the customer prefers a subtle or more statement look.
Round
Softer and timeless. Often suits square and angular faces by adding visual softness and balance, and can also work well on long or oblong faces to add width.
Often suits: Square, long / oblong
KAT examples: Freddie, Jerry, Aristo
Rectangular
Clean and easy to wear. Often suits round and oval faces by adding structure, length, and definition.
Often suits: Round, oval
KAT example: Thomas
Oval
Balanced and versatile. Usually works well for customers who want a softer luxury shape that does not feel too sharp or too directional, and can flatter square, heart, and long / oblong faces.
Often suits: Square, heart, long / oblong
KAT examples: Reine, Spencer
Cat Eye
Lifted, elegant, and expressive. Usually flattering on round, oval, and heart-shaped faces because the upper corners create definition and a more lifted visual line.
Often suits: Round, oval, heart
KAT examples: Lami, Marquise
Square Cat Eye
A sharper, more fashion-forward take on the cat-eye. Often suits oval, round, and softer face shapes that benefit from stronger geometry and visual definition.
Often suits: Round, oval, softer face shapes
KAT example: Bella
Geometric
Architectural and distinctive. Often works well on oval faces because they can carry stronger shapes, and also on softer round faces when a customer wants more edge.
Often suits: Oval, round
KAT examples: Ellis, Tam
Cat Eye Geometric
Blends lift with modern structure. Ideal for customers who want something feminine but less classic than a traditional cat-eye, especially on oval, round, and heart-shaped faces.
Often suits: Oval, round, heart
KAT example: Quinn
04 How to Compare with Your Current Glasses
1
Look inside the temple arm of a pair you already own.
2
Find a number like 52 □ 18 – 145.
3
Compare the first number with the KAT LECHATTOM size shown on the product page.
4
Use the bridge to judge nose fit and the temple length to judge side comfort.
5
Choose close to your current fit for familiarity, or go larger for a bolder look.
05 Frequently Asked Questions (FAQ)
What if I am between two sizes?
Choose the smaller size for a closer, neater fit or the larger size for more coverage and a more fashion-forward appearance.
Is lens width the only number that matters?
No. Lens width is the easiest first reference, but bridge fit and temple length strongly affect comfort.
How do I know if my bridge is too wide?
If the frame slides down your nose easily or sits lower than expected, the bridge may be too open for you.
What if I want a statement look?
Look for larger lens widths, stronger shapes, thicker acetate fronts, or geometric and cat-eye silhouettes.