If you have yet to invest in a proper ergonomic office chair, you are seriously missing out. Moreover, you are probably doing untold damage to your back and other joints. A good ergonomic chair can set you up with perfect posture, moving weight from stress points in your back, and making your office a healthier, happier, more productive place. Right now, you can score $400 off the Backstrong C1 Vegan Leather chair from All33. It’s only $800, down from its original price of $1,200 — a discount made possible by shopping direct at the manufacturer. At that price, buying this chair is an easy call, but this discount is far from the only reason you should invest in the All33 Backstrong C1 as your new office chair.

“Taking good care of your back is not something you can ignore right now,” says Dr. Travis Stork, who endorses this chair, especially now that we’re spending most of our days literally sitting at home. The wrong chair can “stiffen your muscles and tighten your joints,” he says. “You need to prevent problems by being in motion.” Dr. Stork says that the dynamic qualities of this chair can assist with that motion. The seat of the All33 Backstrong essentially hangs from the arms, like a swing, so there’s movement, which allows you to maintain good posture throughout the day.

The seat, or saddle, is designed to match your lower back and rear end, allowing ergonomic movement and providing lower thoracic support and ideal posture. The effect here is that it cradles your lower back to take stress off of pressure points and give you ideal posture. The result: Less pain in your shoulders, neck, and back. This chair doesn’t just support you, it saves you. The movement its unique design creates allows an increase of oxygen and better breathing, which will make you feel better and more energized. It also stimulates blood flow, which is known to reduce fatigue from sitting.

See what one user has to say:

I sit at my desk most every day all day … I developed truly horrible sciatica back pain that ran down my left hip, leg, and ankle … I searched online and found the All33 Backstrong chair … Amazingly, in less than a week my back began to feel different. In two weeks my sciatica almost was gone. I stopped taking pain meds. Now all my back, hip, leg, and ankle pain are completely GONE! I never would have imagined that simply sitting in a chair could fix my condition.

Available in several colors, in handsome vegan leather (way less sweaty and creaky than animal leather — more durable too), the All33 Backstrong chair has foldaway arms, which allow you to move your chair closer to your screen, which can really save your eyes and reduce strain. The design is sleek, and not too techy — breaching that divide between classic office furniture and something more futuristic. Also, the chair’s components are built with sustainability in mind and are 100% recyclable.

First of all, there’s the giant discount on this chair; it’s a third off! And All33 has you and your budget in mind. Not only does All33 provide a 60-day money-back guarantee, but the company also offers financing on that great price, starting at $67 per month, through Affirm. Finally, All33’s chairs come with a five-year limited lifetime warranty on all components. So you can sit back and relax, in more ways than one.