Kod projektiranja većine svojih čizmi, SIDI koristi novu generaciju materijala zvanu TECHNOMICRO". Technomicro su kompozitna mikrovlakna rađena od niti koja je svaka tisuću puta manja od niti svile. Ova vlakna se ponašaju kao prirodna koža, ali uz prednost bolje čvrstoće. mekše teksture i manje težine. Technomicro je također otporan na vodu, vrlo otporan na habanje i kidanje, te se lako čisti i održava.
The two nylon braces join the ankle joint with two screws that are hidden by a nylon cap. This system supports the ankle and is reinforced with fiberglass and is easy to replace. This system allows excellent flex movement front-to-back while being firm side-to-side.
Sidi has added a small elastic panel to aid in a smooth zipper operation as it allows a bit of movement via the elastic as the zipper passes over the rider's ankle ball.
A polyurethane shell holds a shock absorbing insert, visible from the outside through small slits that mark out the look of the heel. The shell is mobile as it is fixed to the boot by 2 screws that allow 3 mm of impact movement.