What people ask before they buy, answered in one place.

The seat adjusts steplessly from 42 to 50cm, which suits a standard 70cm desk. Full dimensions are in the product images.

The armrests flip up, so the chair slides fully under a desk and takes up less room.

The box includes the tools and a Japanese assembly manual. Following the steps, one person can build it in about 30 minutes.

Before assembly the carton is 56×25.5×53cm. Any front door 60cm wide or more will take it without trouble.

Weight varies by model.

・Round-base model: about 8.4kg

・Rocking model without headrest: about 9.2kg

・Rocking model with headrest: about 9.7kg

All are light enough that, held by the seat frame, one person can move and reposition the chair easily.

The seat is about 47cm wide and about 47cm deep, comfortable for an average build.

Round-base model and rocking model without headrest: the backrest is about 65cm, supporting from the lower back to around the shoulder blades.

Model with headrest: the adjustable headrest extends support to the head.

The base is about 60cm across and sits low, so the chair stays steady and does not wobble when you lean into it.

Every unit is inspected before it ships. If a part is not right, send us a photo and we will sort it out quickly.

We are sorry — no spare screws or spare parts are included. If anything is missing or damaged, send customer support a photo after your order arrives.

The high-elasticity breathable mesh lets air move freely, so it stays comfortable through long sittings and in summer.

High-resilience foam gives it a middle firmness with spring. It does not sink under you, which suits long working sessions.

The mesh has high tensile strength and is designed not to sag within normal use.

Wipe light dust with a dry cloth, or vacuum on a low setting. If you spill liquid, blot it up straight away.

The mesh is not removable or machine washable. Wipe marks with a damp cloth and let it dry somewhere airy.

Being new, it may carry a faint material smell on opening. Left somewhere airy for 1-2 days, it fades on its own.

Because the mesh breathes well, it can feel cool in a cold room. A seat pad keeps it comfortable.

The material is designed to resist static, though a very dry season may still produce a little.

The metal parts are rust-treated. Avoid an extremely damp room where condensation is constant and there is no problem.

The mesh is built for strength, but sharp claws can still tear it. Keep pets from scratching at it.

Yes — the seat turns a smooth 360 degrees, so changing direction or reaching across a desk is easy.

Quiet PU castors suit both wood flooring and carpet. They are gentle on the floor and roll with little noise.

An independent lumbar support adjusts both up and down and forward and back, so you can set the fit to your build and posture.

Rocking series: rocks smoothly to about 30 degrees, which is ideal for taking a break. The tension is set by the dial underneath.

Round-base model: a fixed backrest built for stability, better suited to focused work.

Model with headrest: a 3D-adjustable headrest sets freely for height and angle and supports the neck firmly.

Model without headrest: no headrest is included with this model.

An ergonomically shaped backrest and adjustable lumbar support reduce the load on your lower back. Do still take regular breaks.

It is designed for long stretches — home working, study, gaming — balancing airflow with support.

The rocking function and full-body support keep you comfortable through a gaming session too.

The dial sits at the front of the mechanism under the seat. Clockwise firms the rocking, anticlockwise loosens it.

The front edge curves away gently, easing pressure behind the thighs so long sittings tire you less.

The seat height range is wide, comfortable for people from roughly 150cm to 185cm.

On a thin carpet they roll smoothly. A thick, long-pile carpet will add noticeable resistance.

The castors have no lock, but they carry enough resistance that the chair does not roll away on its own.

Use it only with an adult present. Children climbing or rocking it unsupervised risk tipping the chair over.

Never stand on the seat — it risks tipping and damage. This is furniture for sitting on only.

It suits a short rest, but it is not designed as a bed for sleeping through. Please use it as an office chair.

The recommended limit is 150kg. A reinforced nylon base and a standards-compliant gas cylinder keep it stable.

We use a reinforced gas cylinder that meets safety standards and is pressure-tested before shipping. In normal use it is safe.

Tightening the screws evenly during assembly prevents most noise. If a creak appears later, retighten them.

Assembled correctly it neither leans nor wobbles. Use it on a level floor.

The one-piece moulded high-resilience foam resists flattening over long periods of normal use, holding its comfort.

The armrests are solidly fixed and take a reasonable amount of weight without trouble.

The structure is designed and verified for strength. Within normal use there is no problem.

The five-star base is high-strength nylon with excellent load capacity and durability. Breakage in normal use is rare.

There are two main series.

1. Round-base series: a fixed backrest built for stability, aimed at focused work.

2. Rocking series: adds a reclining action for relaxing, and comes with or without a headrest.

If you mostly sit to work or study and want to stay focused, take the round-base model. If you like to lean back between tasks, take the rocking model.

If you want neck support, or somewhere to rest your head on a break, choose the headrest version. If you prefer a simpler look, the model without one is comfortable enough.

This model is not built to take a headrest afterwards. If you want one, buy the rocking model with headrest instead.

Black is the only colour at present. It is a plain design that settles into any interior.

Lighting and monitor settings can shift the colour slightly. There is no significant difference from what you see.

We ship from a warehouse in Japan. Delivery normally takes about 2-5 business days after dispatch.

If anything is damaged or missing on arrival, photograph it and contact customer support promptly. We will deal with it quickly.

For a return by choice, the postage is yours. Where the fault is ours — a defect on arrival or transit damage — we cover it.

The standard quality warranty runs 12 months. It covers defects on arrival and part failures under normal use. Ask support for details.

Within the warranty, we send replacement parts free of charge for defects and transit damage. Contact customer support for details.

It ships in a plain cardboard carton. We do not offer gift wrapping, for which we apologise.

An electronic receipt can be issued from your order history. Request it from the purchase screen if you need one.

The manual has a photograph for every step and the tools are in the box, so a first-timer can put it together easily.

We have not verified compatibility with other makers' products. If something fails, we recommend genuine parts.

Avoid heavy impacts, retighten the screws from time to time, and keep it out of direct sunlight and hot, damp conditions.