What makes the EC300 ergonomic?

It is designed around desk posture, with a seat height you can adjust to line up with your desk. The listed features stop at the adjustable seat, so check the back and armrest design before you buy.

Does it have a headrest or lumbar support?

Neither is listed in the product's features. If you want a headrest or an adjustable lumbar pump, look at chairs that name them.

How does it compare with other ergonomic chairs?

Many rivals in this class add a headrest, lumbar adjustment or flip-up arms. The EC300 keeps to a height-adjustable seat, which is simpler but offers fewer adjustments.

Is ProtoArc a chair brand?

ProtoArc is best known for ergonomic keyboards, mice and trackballs. The EC300 is one of its office chairs, so there is less owner feedback on its seating than on its peripherals.

It suits a home office or shared desk where you mainly need the seat at the right height. Shoppers who want fine-tuned lumbar and arm support should compare chairs with more adjustments.