Upper:

Upper in Full Grain Leather.  Completely lined with water-repellent and breathable Gore-Tex Membrane.

Shin Plate-Scuff Pad-Closure:

The Vertigo Mega Gore model is completed with a fix nylon shin plate to protect the shin and with a replaceable scuff pad.  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.  The ankle area is padded inside.  All parts of the boot can be replaced.

Tecno VR System:

The leg portion, in polyurethane, is fitted with the TECNO VR closing system patented by Sidi, to provide a micro adjustment via a nylon thread passing through two lateral holes.  The mechanism pulls on the thread to wrap the boot symmetrically and snugly around the calf.

Shock Absorbing Heel Cuff:

For greater foot safety, the heel of the Vertigo Mega Gore model is fitted with a transparent polycarbonate shell with two anti-impact shock absorbers.  The transparent shell has 3mm of impact movement.

Sole:

The sole is rubber and the innersole is plastic material with removable arch support.

Mega Last:

Produced with a special Mega shape, studied and projected for those who have a high or wide instep or a large foot.