Measurements
- Lens width
- 52mm
- the “eye size”
- Bridge
- 18mm
- between the lenses
- Temple
- 145mm
- arm length
- Lens height
- 45mm
- lens depth
- Total width
- 136mm
- edge to edge
- Fits PD
- ~70mm
- optical centres
Stamped on a real frame as 52□18-145. What these numbers mean
Where to buy it
4 shops carry the Bastion (a 43% spread between cheapest and dearest).
| Retailer | What you get | Delivery | Returns | Price | |
|---|---|---|---|---|---|
Rivet & RimCheapest Online-only, own-brand acetate | Single-vision lenses + Anti-scratch coating | 3–5 days | 60 days | £107.50 | |
Northlight Optical Independent chain, in-store fitting | Single-vision lenses + Anti-scratch coating | 5–8 days | 30 days | £128 | |
Meridian Eyewear Designer stockist, titanium specialists | Frame only Lenses charged separately | 6–12 days | 30 days | £134.50 | |
Clearview Eyecare High street, free eye test with purchase | Single-vision lenses + Anti-scratch coating | 7–10 days | 28 days | £153.50 |
Prices are checked periodically and can change between checks. Always confirm on the retailer’s own site before buying. We list every stockist we know of, whether or not they pay us anything, and the price column is never reordered by commission.
Close to this one
Pell
Meridian Works
£168
to £206
Square titanium with a knife-thin rim. Structure without bulk.
Square55□17131mm wide23% price gap
Vesper
Halleck
£77.50
to £129.50
A proper upswept cat-eye. Lifts the outer corner of the eye and the whole face with it.
Cat-eye53□17133mm wide67% price gap
Kiln
Atlas Studio
£76
to £117.50
Hard-edged hexagonal. The most architectural shape we make.
Geometric51□20134mm wide55% price gap
Worth having alongside
Whichever shop you end up buying from, these are the things they will try to sell you at three times the price at the counter.