What does the 4D armrest mean?

Hi 4d this means they go up and down side to side backwards and forwards plus they turn on an angle to match your arms when typing. Although the range sideways is not great the rest of the movement is fine.

What is the function of the adaptive backrest?

When people lean on the chair's backrest, they can stretch their back up and down, or turn their body left and right in a small range. Those are good for your physical comfort.

How can I adjust the lumbar support? It can be moved upwards but I can’t figure out how to move it back down again.

Please note that when adjusting the Lumbar Support, starting from the lowest setting, gently raise the support one ‘click’ at a time until you reach the desired position. If you raise the support to a position higher than is required, pull the support all the way to the top, which will then allow you to push it back down to a more comfortable position.

Brand	HOLLUDLE
Model Number	Shaper1-BK
Colour	Black
Product Dimensions	70 x 68 x 131 cm; 19 kg
Special Features	2D headrest: rotatable/ lifting/ detachable, 4D Armrest: up & down/ left & right/ rotation/ front & rear, Adaptive backrest, Adjustable Lumbar, Adjustable seat depth
Item Weight	19 kg

HOLLUDLEErgonomic Office Chair with Adaptive Backrest, High Back Computer Desk Chair with 4D Armrests, Adjustable Seat Depth, Lumbar Support and 2D Headrest, Swivel Task Chair, Black

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