Boulies Master Rex Gaming Chair (Ash Grey)

Ergonomic Reclining Gaming Chair

From: Boulies

The Boulies Master Rex Gaming Chair combines office practicality with gaming comfort. It has a wide seat cushion with rounded edges that spreads weight evenly across the hips and thighs. This design cuts pressure points during long sitting sessions.

Built-in 4-way adjustable lumbar support follows the natural curve of your spine. Pair that with 4D armrests and an integrated leg rest and you get a chair that adapts to how you sit rather than forcing you to adapt to it.

A steel frame and 100% cold-cured foam keep the shape solid over years of use. The recline range runs from 95° to 165°, locking at your preferred angle. Aluminium armrests and a Class-4 gas lift add stability underneath.

Check Price

Amazon UK

Product Features

4-Way Adjustable Lumbar Support - The lumbar pillow moves in four directions so it sits exactly where your lower back needs it. This matters because generic lumbar pads often miss the mark on shorter or taller frames. Getting the position right reduces lower back strain during long work or gaming sessions. Wide Seat Cushion with Rounded Edges - The seat spreads your weight across a bigger surface area and the rounded edges stop the cushion digging into your thighs. This is important for people who sit for hours at a time, as it keeps blood flow steady and reduces numbness. Reclining Range 95° to 165° - This chair moves from an upright working position to a near-flat resting angle. That range means one chair covers both a focused work session and a proper break, without needing to get up.

4D Armrests - The armrests adjust up, down, forward, back and can pivot, made from aluminium alloy with a soft top surface. Correct arm positioning takes strain off the shoulders and wrists, which matters if you type or use a mouse for hours. Steel Frame with Cold-Cured Foam - The frame is built from steel rather than lighter metals and the foam inside the seat and backrest is cold-cured rather than standard foam. This combination holds its shape for longer and resists sagging, so the chair should perform the same after two years as it did on day one. Class-4 Gas Lift and XL PU Casters - The gas lift is rated Class-4, a higher grade than the Class-3 lifts found in cheaper chairs, giving smoother height adjustment under more weight. The XL PU casters roll smoothly on most floor types and add stability when the chair is reclined.

FAQs

What is the maximum weight this chair can support?

The Boulies Master Rex is rated for people up to 110 kg. This limit is set by the gas lift, frame strength and casters, so staying within it keeps the mechanisms working correctly over time.

What height range is this chair suitable for?

Boulies recommends this chair for people between 155 cm and 180 cm tall (roughly 5'1" to 5'11"). This is the size range where the seat depth, backrest height and armrest reach will fit properly.

Does the chair recline fully flat?

No. The recline range runs from 95° to 165°, so it does not lie completely flat at 180°. It does go far enough back for a comfortable rest position and the angle locks in place once you find the spot you want.

Is assembly difficult?

Assembly is required but a tool kit and instruction manual are included in the box. Most people can put the chair together with basic tools and no professional help, though it does take some time given the size of the parts.

What is the seat and backrest made from?

The seat uses Ultraflex PU material, a synthetic leather developed by Boulies after extensive testing for durability and a soft, suede-like feel. The frame underneath is iron and steel, with 100% cold-cured foam inside the seat and backrest cushions.

How does the lumbar support work?

There's a built-in lumbar pillow that adjusts in four directions. You move it up, down, forward or back until it matches the curve of your lower spine. This is different from fixed lumbar bumps found on cheaper chairs, which cannot be repositioned.

What colour options are available?

This chair comes in Black, Ash Grey and Charcoal Grey. All three use the same Ultraflex PU material and water-repellent fabric detailing, just in different colourways.

What warranty comes with this chair?

Boulies backs the Master Rex with a two-year warranty. This covers manufacturing faults in the frame, gas lift, casters and upholstery under normal use.

Boulies Master Rex Gaming Chair (Ash Grey) Specs

Spec	Detail
Brand	Boulies
Model	Master Rex
Colour	Ash Grey
Material	Ultraflex PU
Fabric Type	Water Repellent Fabric
Frame Material	Iron and steel
Upholstery Type	Polyurethane
Depth	71 cm
Width	74 cm
Height	121 cm
Item Weight	30 kg
Size	Small
Recommended Height Range	155–180 cm (5'1" – 5'11")
Maximum Weight Recommendation	110 kg
Back Style	High back
Style Name	Modern
Pattern	Solid
Item Shape	Curved
Arm Style	Pillow top
Leg Style	Wheels
Form Factor	Recliner
Reclining Position Count	3
Recline Angle Range	95° to 165°
Lumbar Support	4-way adjustable
Armrest Type	4D, aluminium alloy
Gas Lift Class	Class-4
Wheelbase Material	Aluminium alloy
Castor Type	XL PU casters
Seat and Backrest Fill	100% cold-cured foam
Package Dimensions	33 x 27 x 14 inches
Package Weight	65 lbs
Assembly Required	Yes
Warranty	2 years