This ski's reinforced titanium design helps this ski to be responsive and durable. The Dobermann SL Pro's Full Twin design consists of a curved tip and tail. This design helps with control. The XBi TC bindings of this ski give you additional control over your movements. This ski differs from the lower cost Dobermann Spitfire Pro EDT in that it has a 67mm. waist (as opposed to the Dobermann Spitfire Pro EDT's 72mm. waist), which encourages ultra-fast speeds. This ski differs from the identically priced Dobermann GS Pro in that the Dobermann GS Pro has larger sizes (171cm.-186cm. range as opposed to the Dobermann SL Pro's 155cm.-170cm. range), as well as a different sidecut (111-67-97 as opposed to the Dobermann SL Pro's 120-67-103). There are size options available for the Nordica Dobermann SL Pro race ski.