VELA Latin 400 Multi-Dynamic with seat and back free float tilting mechanism and user weight up to 155 kg. The chair comes in three sizes of seat and back. It can also be supplied with ErgonomiPlus seat and back. The VELA Latin 400 has several adjustment and settings options, allowing the user to simply and swiftly adjust their posture. VELA calls this Multi-DynamicTM, to reflect the fact that the most important ergonomic parameter is in fact 'active' sitting - and this can be simply and instantly achieved using the free float tilting mechanism.