Sidi Ergo 4 was one of the most sought after shoes in the early 2000's it's not upgraded and has been reintroduced with the same 2 dials and one strap.
The Ergo 4 Carbon is a high-end competition shoe by Sidi featuring multiple adjustment possibilities and high-quality workmanship. The Tecno-3 System provides a customized and secure fit while the Twelve Carbon Composite outsole ensures excellent power transmission. The upper is a high quality Tech Pro Nylon Mesh microfiber. It is breathable and regulates temperature and thanks to its surface finish it is dirt-repellent.
MICROFIBRE PERFORMA TECH PRO and NYLON MESH
TWELVE CARBON CARBON SOLE
SOFT INSTEP 3
TECNO III SYSTEM
HIGH SECURITY VELCRO
ADJUSTABLE HEEL RETENTION DEVICE
SIDI HEEL CUP
REPLACEABLE HEEL PAD