This is an extensive collection with many style options that make it a very versatile and all-round unique collection. Moreover, the shell is made of technopolymer that can also be upholstered or a cushion can be added instead. In addition, the cushion is designed specially to create the best of both worlds by being able to fix it to the shell with 9 buttons making it easy to apply and remove when necessary. This option has a gas lift base.