SIDI Aeron

SIDI 2026 Collection
Note: If your size/color is not showing available to purchase please contact La Bicicletta Toronto for updated information/assistance.

SIDI AERON redefines off-road, adventure ride performance through advanced construction and precision fit. The ripstop upper with rubber bumpers offers protection without added weight, while dual NUUN 001C dials and internal Firmor reinforcement ensure secure, responsive support. A fast-adapting instep and UNUM tongue deliver a pressure-free fit, complemented by a tool-free heel adjuster for fine-tuned stability. The sole, with stiffness index 11 and generous rubber coverage, offers powerful traction and efficient energy transfer.
SIDI Performance index 10/10
SIDI Stiffness index 11/12
SIDI Millenium Fit.

TECHNOLOGY
//Upper: Ripstop fabric with rubber bumpers – lightweight, tear-resistant, and protective
//Closure: Dual NUUN 001C aluminum dials – aerodynamic, precise, and secure fit control
//Instep: Adaptive instep linked to dials – molds to foot for a personalized fit
//Fit System: Firmor X internal support + tool-free heel adjuster – enhanced foot stability and alignment
//Tongue: UNUM Ergo anatomical tongue – relieves pressure for consistent comfort
//Outsole: X2FC full carbon with rubber lugs – stiffness index 11, built for grip, impact support, and efficient power transfer
//Cleat Setup: Independent cleat adjustment for personalized positioning
//Replaceable Parts: Heel pads and dials

SIDI Millennium Fit: This new design features a slightly more spacious toebox shape, offering enhanced comfort and better adaptability to the foot.

SIDI Millennium Fit size guideline 2026:
Euro 37 | 23.2cm | US/CAN 5
Euro 37.5 | 23.5cm | US/CAN 5.5
Euro 38 | 23.8cm | US/CAN 6  
Euro 38.5 | 24.2cm | US/CAN 6.5  
Euro 39 | 24.5cm | US/CAN 6.5 
Euro 39.5 | 24.8cm | US/CAN 7  
Euro 40 | 25.2cm | US/CAN 7.5  
Euro 40.5 | 25.5cm | US/CAN 8  
Euro 41 | 25.8cm | US/CAN 8  
Euro 41.5 | 26.2cm | US/CAN 8.5  
Euro 42 | 26.5cm | US/CAN 9  
Euro 42.5 | 26.8cm | US/CAN 9.5  
Euro 43 | 27.2cm | US/CAN 10  
Euro 43.5 | 27.5cm | US/CAN 10.5  
Euro 44 | 27.8cm | US/CAN 10.5  
Euro 44.5 | 28.2cm | US/CAN 11  
Euro 45 | 28.5cm | US/CAN 11.5  
Euro 45.5 | 28.8cm | US/CAN 12  
Euro 46 | 29.2cm | US/CAN 12  
Euro 46.5 | 29.5cm | US/CAN 12.5  
Euro 47 | 29.8cm | US/CAN 13  
Euro 48 | 30.5cm | US/CAN 13.5  

SIDI size measurement procedure.
Measure your foot by following these steps to obtain the reference measurement.
1. Put a piece of paper on the floor and mark the following points.
2. Mark the point in front of the tip of your longest toe and then mark the heel point for both left and right
3. Measure the distance between the heel mark and the toe mark. Record the cm/mm measurement and compare to the size guide chart for the suggested size. Use the size of the larger foot, most people will have slight difference between the left and right foot.