Bally BY5021 — Eyeglasses Butterfly
The Bally BY5021 is a women’s butterfly optical frame in black metal, presented by Eyewearista.
Design & materials
A metal frame keeps the profile fine and light, and an optician can adjust it for a precise fit. A full rim surrounds the lenses.
Lenses
This optical frame is designed to be fitted with prescription lenses by an optician. Supplied with demonstration lenses, to be replaced by your prescription.
Size & fit
55-16-140 means 55 mm lens width, 16 mm bridge and 140 mm temples — a medium size. Compare these figures with a pair you already wear for the best fit. Total frame width 135 mm; lens height 40 mm.
Details
- Type: Eyeglasses
- Brand: Bally
- Gender: Women
- Shape: Butterfly
- Material: Metal
- Frame Color: Black
- Size: 55-16-140
- In the box: Branded case
- Reference: BY5021
- EAN: 0889214132659
About Bally
Bally was founded in 1851 in Schönenwerd, Switzerland, by brothers Carl Franz and Fritz Bally as a shoemaking business, and later expanded into leather goods and ready-to-wear.
Bought at Eyewearista
An authentic frame with its manufacturer’s certificate, advice from certified opticians, and a boutique in Saint-Germain-en-Laye where you can try it on or collect it within 24 hours. Shipped in 72 hours in mainland France; 14 days to change your mind.
Need advice on fit (bridge, width, shape) or lenses? Contact us: we’ll guide you just like in-store.

















