Sihoo Doro S300 review: A space-age office chairYes, it's expensive, but by jove is it comfortable. Review by Reece Bithrey Contributor Published on Dec. 18, 2024 The Sihoo Doro S300 has to be one of the most interesting, if futuristic, looking chairs Ive seen in a long time. Its been marketed by the Chinese brand as a zero gravity chair, possibly designed to make you feel as if youre floating in mid-air when in reality youre writing an important email.Its perhaps important to address that claim first. Of course, no chair is going to actually let you float in mid-air - it wouldnt be a chair then. But, the Doro S300 gets seriously close to making you feel that way. Theres more support in this chair than Ive ever experienced before, owing to the literal suspension that the Doro S300 has, combined with its myriad of adjustability and clever dual lumbar support. The feeling of relaxation and almost zen you get from using it is like plonking your backside down on a cloud, truth be told.Thats not an exaggeration, either. Ive been through my fair share of racing-seat style gaming chairs, and while the more premium choices such as the Secretlab Titan Evo have been comfortable, they dont come close to the Doro S300. Everything on this chair is adjustable, too, from the actual seat to the armrests, and back panels. Thats good in some instances, as you can configure the Doro S300 to your hearts content, although not so good in others. Even slightly readjusting myself after coming back to my desk caused the seat to move, while the armrests would not lock in place. Theyre brilliant for changing their angle or orientation, but wont stay in that position for too long. The armrests are quite enthusiastic to move.With regard to its adjustment, the Doro S300 offers up to 138 degrees of recline over three settings. For my use, I kept to the middle setting to offer the flexibility to go back without feeling as if I was about to fall out of the chair. Combined with this, theres those pesky 6D armrests that can go up and down vertically, from side to side, and even diagonally if you want. The backrest is split into two pieces, with a wider top piece for supporting your head and shoulders, while the bottom piece is spring-loaded and adjusts the strength of the lumbar support. The chairs seat is also suspended on springs, so cushions you well when you sit down initially.This is a high-back chair, supporting everything from your back to your arms especially well, and I dont rue the lack of a head-rest, as some may do. I very rarely made use of them in other chairs Ive owned, perhaps given my posture isnt the best, but the Doro S300 nonetheless felt especially comfortable even without one. Being a mesh chair also means its breathable and I didnt get too uncomfortable or sticky from using it for hours on end over the summer months when it gets particularly hot in our office. In all other settings, its been a joy to use. Yes, that is literal suspension so you feel like you're all floatin' and stuff.In addition, its supremely well-built with a mix of a thick metal base, a velvety mesh seat and fibreglass accoutrements that make it one of the best chairs Ive seen in terms of build quality, while in the white colourway I have here, it looks immensely stylish. Its also rather heavy, which makes it a bit unwieldy to build. Assembling the Doro S300 is undoubtedly a two-person job simply given how hefty it is, as you need one person to hold a piece in place while the other screws it in. All in, building it probably took about half an hour to 45 minutes, which is reasonably okay.Then theres the price. Theres no easy way of saying this - the Sihoo Doro S300 is an 680/$800 chair, making it one of the more expensive office chairs you can purchase, full stop. For reference, the Secretlab Titan Evo 2022 starts at $549, while the IKEA Markus is $290, and those have been two of our favourite gaming chairs for quite a while. With its spec sheet and the overall user experience here, its fairer to compare the Doro S300 to the likes of the Herman Miller Cosm ($1730) and the Steelcase Gesture ($1663), and in the context of those chairs, its a fair bit more affordable. The fabric mesh is comfortable and breathable.In essence, the Sihoo Doro S300 is a fantastic office chair thats certainly one of the most comfortable Ive used in years. That goes for everything from its breathable mesh material to its heaps of adjustment and its smooth recline. In addition, its especially well built and looks fantastic. It is an expensive chair, but definitely worth the investment.