&lt;p&gt;Executive office chair, characterized by essential shape. The structure is made of black nylon with cold polyurethane foam padding, material that allows to give a very regular shape and ensure long life without deformation.&lt;br&gt;&lt;br&gt;Upholstered is available in different types and in a wide range of colours.&lt;br&gt;&lt;br&gt;The 5-star &lt;strong&gt;base&lt;/strong&gt; has a pyramidal shape, square, matched to the essential lines of the chair. It can be in black nylon or aluminum. The &lt;strong&gt;castors&lt;/strong&gt; can be chosen from among the black version and the rubberized one, more suitable for delicate floors.&lt;br&gt;&lt;br&gt;The &lt;strong&gt;fixed&lt;/strong&gt; &lt;strong&gt;armrests&lt;/strong&gt;, optional, are available in different shapes. &lt;br&gt;&lt;br&gt;The seat adjustment system is a &lt;strong&gt;self-regulating mechanism&lt;/strong&gt; &lt;strong&gt;Syncro 5 position&lt;/strong&gt;. It allows the free oscillation of the seat and backrest with synchronized movement, giving the possibility to lock the position at 5 different points.&lt;br&gt;The system is self-adjusting, and self-adjusts the intensity of the oscillation based on the user's weight; It is also equipped with &lt;strong&gt;anti&lt;/strong&gt;-&lt;strong&gt;shock&lt;/strong&gt; &lt;strong&gt;system&lt;/strong&gt;, which avoids the abrupt return of the seat in an upright position.&lt;br&gt;&lt;br&gt;Upon request, this office chair is also available with Syncro system 5 positions 24h, which uses a tested mechanism to ensure maximum comfort even in case of very intensive use or with Syncro system 5 positions 24h with slide seat.&lt;/p&gt;                                                    &lt;p&gt;&lt;/p&gt;&lt;div class=&quot;sizes-and-weight-desc&quot;&gt;&lt;b&gt;Dimensions and weight&lt;/b&gt;&lt;table class=&quot;tDim cUfficio01&quot;&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td class=&quot;tDim1&quot;&gt;&lt;span&gt;45.5 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim2&quot;&gt;&lt;span&gt;50.5 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim3&quot;&gt;&lt;span&gt;44-57.5 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim4&quot;&gt;&lt;span&gt;101-123 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim7&quot;&gt;&lt;span itemprop=&quot;weight&quot; itemscope=&quot;&quot; itemtype=&quot;http://schema.org/QuantitativeValue&quot;&gt;&lt;span itemprop=&quot;value&quot;&gt;16.1&lt;/span&gt; &lt;span itemprop=&quot;unitCode&quot;&gt;kg&lt;/span&gt;&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/div&gt;