SIDIZ シディズ T50 オフィスチェア 椅子 チェア 事務椅子 テレワーク 疲れない デスクチェア ワークチェア 人間工学椅子 エルゴノミクスチェア 2WAY ランバーサポート 調整 ヘッドレスト 3D アームレスト 前傾チルト 肘かけ メッシュ 座面奥行調整可能 S字背もたれ 座面高 50cm以下 （グレー）

UPDATE 6/5/2020 I was so happy with this chair that I immediately gave it 5 stars and all the accolades that it deserves. Well, a few days into using the chair, I noticed that the seat cushion was defective. It was defective in a way that the foam gave out way too soon. I am 6' tall, 195lbs, and I don't think I weigh enough to wear out a seat cushion that quickly. So, I reached out to Sidiz and they were very helpful with my concern. They took time to figure out what could be wrong with the product that I received and sent me a replacement cushion. I received the replacement cushion just an hour ago. I inspected it and compared it to the original seat. They sent me a seat that's about an inch or so thicker. I also noticed that they used a different foam material. Or maybe it's just the color. Anyway, I installed the new seat and I have to say that it is so much better! Yes, it is much more firm than the original seat, but there is enough give to it that my butt settles into it quite nicely. I also experience pain on my coccyx due to a snowboarding accident years ago, and I don't have that problem with the new seat. This is the first time I experienced that an Amazon vendor has given this much attention to a customer's concern on their product. And for that, I give them 5 stars! As for the squeaking sound you hear, it's coming from the lumbar support section. It's a sound produced when 2 plastic parts exert pressure against each other. I imagine that this can be alleviated by adding a thin layer of padding. Unfortunately, there is no way to access the screws on the lumbar support unless you peel away the mesh back. The sound only comes out if you're moving too much on your chair. If you are very restless, then, you'll hear more of that sound. It doesn't bother me at all because I sit pretty steady. So, that's that. I am a happy camper! I recommend this product, not only because it's a good one, but because the company has a very good customer service! _______________________________________ ORIGINAL REVIEW: I just got this chair delivered minutes ago and I was so excited and assembled it immediately. It took less than 10 minutes! Lay down the feet, put the spring, attach the back onto the seat. Attach the arm rests. Position the chair onto the spring. Voila! All of the chairs that I have bought, returned, or given away, have all been short in height. I was skeptical about this one. But the fact that it has a seat height adjustment on top of the spring mechanism, is amazing. I am actually seated perfectly now, with both feet flat on the floor with my knees bent at 90 degrees! The other amazing thing about this chair is that it comes with adjustable armrest height. This enables me to position my arms properly, and straight reach to the keyboard and mouse. Again, that angle is critical and I am definitely glad that this chair allows me to have that. The adjustable lumbar support is also a welcome change. Gaming chairs just give you that pad, which does nothing, really. With the T50, the lumbar support can be adjusted to what your body needs! I did wish that the horizontal adjustment added another inch. Even the headrest is adjustable! They really thought of everything! One thing I wished it included was a selectable tilt angle/height. There is just normal and the high level. Nothing in between. Well, almost. They didn't add a leg rest. Then again, if they did, I'd be sleeping on this chair! And we don't want that now, do we? =)

Excellent quality and a well thought out design. Made in Korea...not China

Love their customer service, quality and design of the chair. No regrets, this is definitely one of the best purchase I’ve ever done.

After buying three chairs for $250 or less I realize I needed to spend some money for all-day comfort. I was sold on the Herman Miller Aeron, but it was easily crossing a thousand dollars with the add-on options I wanted. I did some solid research on Aeron alternatives and I selected this one based on price (excellent), reviews, how it looks, and the ability to return it if I didn't like it. The chair was easy to set up, super comfy, and at first, my body was like, "this is different, it's a new chair, do you like it?" Within an hour I had stopped thinking about the chair and just worked the rest of that Friday. The following Monday I played around with all the adjustments and got it dialed in. It adjusts in so many ways, you can easily set it up to your needs. In the days after that, I never thought about the chair again. I can work all day in the most comfort I've ever had in a chair. For me, the adjustability and comfort alone are worth it. It happens to be affordable and looks great too. #### Here's my take after 1.5 weeks and 40 hours of sitting: Pros: The back tension is amazing. I leave it unlocked so I can lean back as far as I want and yet sit upright without locking the chair. I can easily rotate the handle to adjust the tension while sitting. When I want to lean way back, I turn it one rotation looser. ... The seat chair is plenty "long" and you can move it forward and back. I can sit with one leg Indian style and this is helpful. The seat cushion is just right. Soft enough to stay comfortable all day, thin enough so it feels appropriate for an office chair. The armrests are super cozy and go up/down and rotate inward/outward. It's easy to assemble. It's very stable. Feels great. Cons: It sits high, even in the lowest setting. I'm 5'10'' with slightly shorter than normal legs. But I didn't have any problems. Usually, chairs go lower. The forward seat tilt feature is an on/off thing. You cannot choose how much forward tilt you want. You can just turn it on. With that said, forward tilt felt great, but normal felt even better. So I keep it off. The headrest is useless. I find this true in all headrest chairs. The lumbar thing is cool, but I just tried to make it as if it didn't exist. I'm not a fan of these. I was able to get to where I don't notice it is there. ##### In conclusion, I did a lot of research, purchased three other chairs in the last four months, and this one is leaps and bounds better than those $200 - $250 chairs. I highly recommend it. This is the most comfortable chair I've ever owned.

Initially, this chair seemed like a good buy, but the seat padding has proven to be of poor quality. After only six months of use, it's practically as if you're sitting on the hard plastic below, offering little to no comfort or support. Dealing with the supplier for a resolution has been frustrating. They've asked me to jump through numerous hoops, demanding multiple photos and insisting on direct contact rather than handling it through Amazon's platform, which is inconvenient and time-consuming. Overall, I do not recommend this chair. The comfort level drops significantly after a short period, and customer service has been less than satisfactory. Look for a better quality option for your seating needs.