The Fibonacci Fit
The Fibonacci Fit
LIBER & ABBACI
How do they FIT?
NOTE: If you’re between sizes round up by half a size!
LENGTH & WIDTH - Our shoes have a
Our shoes offer a slightly narrower fit than typical sneakers and are sized according to the industry-standard Brannock Device®. We currently offer a standard “D” width and do not yet offer wide sizing. If you have a fuller foot or typically wear wide shoes, consider sizing up by half a size. For those who regularly require wide widths, these may feel too snug.
INITIAL FIT - Each pair is fully lined with premium full-grain leather, which may feel snug at first. This is normal, the leather is designed to stretch and mold to your foot over time, creating a custom fit. For best results, treat your shoes regularly with a leather conditioner to keep them soft and flexible. Additionally, our sport insole provides generous cushioning but can be swapped out for a thinner insole if you prefer more room.
FIT COMPARISON - If you're familiar with the Cole Haan ZeroGrand series, you'll find a similar feel in both fit and comfort with our Fibonacci shoes.
The Liber
Our Unique Comfort
1) TempSync™ Adaptive Lining
Keeps your feet cool in summer and warm in winter, while offering soft, sneaker-like cushioning that molds to your step.
2) OrthoLite® + CushionCore™ + SlimForm™
A precision engineered triple layer system combining OrthoLite® high performance sport insole, CushionCore™ silicone shock absorption layer, and lightweight rebound ready SlimForm™ EVA midsole platform. Together they deliver superior impact control, dynamic flexibility, enhanced energy return, and all day support, seamlessly integrated into a sleek professional silhouette.
3) Padded Collar, Suede Heel Cup & Seamless Stitching
Engineered to eliminate pressure points and interior friction, these premium details work together to create a snug, sneaker-like feel that’s secure, supportive, and perfectly broken-in from the very first wear.
Luxury Meets Comfort
TEMPERATURE REGULATING
FULL GRAIN LEATHER
HIGH-PERFORMANCE INSOLES
LIGHT WEIGHT CONSTRUCT
FORTIFIED OUTSOLES
AUTHENTICATION
