Photos: Matrix · supplied retailer imagery
Coarse match · Seatboxes · Our take
Matrix S36 Pro Seatbox
Lime and black finishes
Solid, tidy and built around 36mm legs, the Matrix S36 Pro Seatbox is aimed squarely at serious coarse anglers who want a stable platform without dragging a monster box to the peg.
- 18.5kg complete weight
- 36mm extending aluminium legs with textured anti-slip anodised finish
- Supplied with one deep drawer unit, one shallow tray and a transport lid
- Open footprint: 830 x 751mm; closed footprint: 578 x 751mm
Make sure it’s the right one. This review covers the Matrix S36 Pro Seatbox, manufacturer product IDs GMB184 (lime) and GMB185 (black).
Tackle Index Score
Tackle Index score
A solid, serious seatbox with the right platform features for match and organised coarse fishing.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9.2/10
- Performance9.1/10
- Impact on Fish Catching8.8/10
- Ease of Use8.9/10
- Value for Money9/10
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Who it suits
Is it right for you?
Great for
- Match anglers fishing canals, commercials and stillwaters. The stable 36mm platform, footplate and organised drawer-and-tray setup suit a busy match peg where quick access matters.
- Coarse anglers wanting an expandable seatbox. The box gives you a solid starting point, with threaded leg caps and a platform that can be built around your style of fishing.
Maybe skip if
- Casual anglers who only need a simple seat. The weight, footprint and extra hardware are likely more than you need for short pleasure sessions.
- Anglers fishing tiny or awkward pegs. The open width and footplate can eat into limited swim space, especially when you’re squeezed into a narrow margin spot.
The lowdown
Introducing the Matrix S36 Pro Seatbox
Solid, tidy and built around 36mm legs, the Matrix S36 Pro Seatbox is aimed squarely at serious coarse anglers who want a stable platform without dragging a monster box to the peg.
- 18.5kg complete weight
- 36mm extending aluminium legs with textured anti-slip anodised finish
- Supplied with one deep drawer unit, one shallow tray and a transport lid
- Open footprint: 830 x 751mm; closed footprint: 578 x 751mm
Quick verdict
A cracking platform for proper match work
The Matrix S36 Pro Seatbox gets the important bits right: a lightweight aluminium frame, chunky extending legs, a useful starting package of storage and a footplate that should feel reassuring when you’re moving around the peg.
It’s not the tiniest box for casual pleasure fishing, and the supplied storage is a starting point rather than a full tackle-room solution. But if you want a stable, tidy and expandable seatbox for canals, commercials and match-style fishing, this is a bob-on choice.
A solid, serious seatbox with the right platform features for match and organised coarse fishing.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9.2/10
- Performance
- 9.1/10
- Impact on Fish Catching
- 8.8/10
- Ease of Use
- 8.9/10
- Value for Money
- 9/10
The aluminium frame, 36mm legs, threaded caps and properly locking footplate point to a well-equipped build.
The wide, adjustable platform should provide a stable base across a good range of coarse-fishing pegs.
It won’t find the fish for you, but better organisation and a steady fishing position can make a real difference when the action starts.
The supplied drawer, tray, transport lid and shoulder strap make the setup straightforward, though the weight takes some getting used to.
You get a serious platform and useful core storage without needing to build the whole box from scratch.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Matrix S36 Pro Seatbox
A seatbox is the heart of a proper coarse angler’s setup. Get it right and everything feels tidier. Your floats are where they should be, the hooklengths aren’t rolling about in the mud and you can settle on the peg ready for the first put-in. Get it wrong and you’re faffing before the match has even got going. The Matrix S36 Pro Seatbox is aimed at the angler who wants that organised, planted feel without stepping into truly enormous box territory.
The clue is in the name: this is built around 36mm legs. That’s a chunky platform size, giving the box a solid stance when you’re sat over the feeder rod, flicking a waggler or shipping a pole. The legs extend for levelling on sloping banks, and their textured anti-slip anodised finish is a nice practical touch. You want adjustments to feel controlled, not like the whole thing is skating away every time you lean forward.
It weighs 18.5kg, so let’s be straight about that. This isn’t a cheeky little seat you sling over your shoulder with a landing net and wander miles. It’s proper match tackle. The removable padded shoulder strap helps, and the four-point fixing should keep the load feeling more balanced, but you’ll still know you’re carrying it when the car park is a hike from the peg. Pack sensibly and it’s manageable; load every tray under the sun and your back may have opinions.
Storage comes as one deep drawer unit and one shallow tray, topped off with a transport lid. That’s a useful spread for the usual coarse-fishing gubbins. The shallow tray is handy for floats, shot, hooks and bits you’re changing regularly, while the deeper drawer gives larger items and bulkier packets somewhere to live. It’s not a complete tackle shop in a box, but it gives you a tidy base rather than forcing you to buy a pile of extras before you can fish.
The transport lid is a dead handy inclusion. It keeps the box’s contents together when you’re moving from the car to the peg or shifting swims during a pleasure session. That matters on busy match mornings, when you’ve got bait tubs, nets, rods and a flask all competing for space. Keeping the loose tackle contained means less chance of a tray popping open and sending your carefully sorted terminal bits into the grass.
Underneath, the footplate uses a durable textured plastic cover and locks with a spring-pin mechanism. That’s the bit you’ll appreciate when you’re moving your feet around during a long session. A proper footplate gives you somewhere to brace yourself while shipping, unshipping or playing a lump close in. The textured surface should also feel more reassuring than a smooth board when the peg is damp and your boots are carrying a bit of mud.
Every leg has a threaded leg cap. That gives the box a practical level of adjustability and leaves you with sensible options for accessories or future changes to the setup. On uneven banks, getting the box level is more than a comfort thing. It helps keep the footplate sitting correctly, stops your bait table feeling wonky and makes the whole session less of a battle. Set the legs before you start, rather than chasing level once the rods are off.
There are two finishes: lime and black. The lime version has a bit more match-peg personality, while black is the quieter choice if you prefer your tackle looking understated. Whichever you pick, the aluminium frame keeps the construction focused on strength without turning it into a steel-heavy lump. Just remember that the 751mm width remains part of the deal, so check your usual pegs if you regularly fish tight canals, narrow platforms or cramped margin swims.
The main question is whether you want a proper seatbox platform rather than a basic seat with a little storage. If the answer’s yes, the Matrix S36 Pro makes a lot of sense. It offers the stable hardware, useful opening storage and footplate needed for match-style fishing, with room to shape the setup around your own rigs and routines. It’s a serious bit of kit, but not a daft one: useful where it counts, tidy on the bank and ready for a busy bite-time.
Specifications
The nuts and bolts
- Weight
- 18.5kg
- Frame
- Lightweight aluminium
- Leg diameter
- 36mm
- Closed dimensions
- 578 x 751mm (L x W)
- Open dimensions
- 830 x 751mm (L x W)
- Supplied storage
- 1 deep drawer unit, 1 shallow tray and 1 transport lid
Specs checked with Matrix, Oct 2026.
Spot a model or spec change?
Our take
Stable, practical and ready for a busy peg
The big attraction here is the combination of 36mm legs and a proper footplate. That gives the box a more planted feel than lightweight compact seats, while the modular storage keeps essentials close without covering the bank in bits and bobs.
It’s a high-value piece of kit in the sense that you’re buying a proper platform rather than a glorified seat. You still need to think about how much storage you want to add over time, but the core setup is sensibly equipped from the off.
The platform
What you’re buying
The Matrix S36 Pro is a full seatbox platform with a lightweight aluminium frame, 36mm extending legs and a locking footplate. The legs have a textured anti-slip anodised finish, while threaded caps are fitted to all four legs. That makes levelling more straightforward and leaves the setup ready for practical accessories.
Storage is sensibly split between one deep drawer unit and one shallow tray. The shallow section is the natural home for regularly used floats, hooks, shot and hooklength bits. The deep drawer suits bulkier packets and spare tackle. A transport lid keeps everything together when you’re carrying the box to and from the peg.
The footplate has a durable textured plastic cover and uses a spring-pin mechanism to lock it in place. Open, the box measures 830 x 751mm; closed, it measures 578 x 751mm. That’s a useful footprint for stability, but you’ll want to keep the width in mind on narrow or busy pegs.
Worth knowing. The 18.5kg weight includes a fair bit of proper platform hardware. The padded, removable shoulder strap helps with transport, but this remains a serious match box rather than a lightweight perch seat.
On the bank
A box for organised coarse fishing
This is aimed at anglers who fish with a planned setup. Think pole sections, feeder rods, floats, hooklengths and a peg where everything needs to be within easy reach. The drawer-and-tray arrangement gives you a clean starting point, while the 36mm legs and footplate help when you’re spending a full match or long pleasure session in one position.
It’ll suit commercial and canal anglers who want a planted box that can cope with uneven banks. Set the legs carefully, get the footplate level and you’ve got a much more comfortable base for shipping, feeding and playing fish close in. It also makes sense for anglers who want to add or change storage as their fishing evolves.
It’s less convincing for short sessions where you only need a chair and a small shoulder bag. The weight and footprint are real considerations, especially if you’re walking a long way or fishing a cramped margin. Likewise, anglers carrying loads of extra kit may quickly want more storage than the supplied drawer and tray provide.
Quick answers
The stuff you’ll want to know
Can the Matrix S36 Pro be used on sloping banks? Yes. The extending legs are designed to help level the box, and the textured finish should help keep adjustments secure. Take a minute before fishing to make sure the platform and footplate are sitting properly rather than trying to sort it mid-session.
What should go in the supplied storage? Use the shallow tray for high-turnover items such as hooks, shot, floats and small feeders. Keep spare packets, hooklength wallets or larger accessories in the deep drawer. That way, the bits you reach for during a screaming take are close at hand.
Is the box transport-friendly? It has a removable padded shoulder strap with four-point fixing and a transport lid, so carrying and packing are considered. Even so, 18.5kg is substantial. Take the sensible route: keep heavy bait and bulky extras separate where possible, and don’t make the walk to the peg harder than it needs to be.
Worth knowing. Choose lime if you like a brighter match-peg look, or black if you want something more discreet. The manufacturer product IDs are GMB184 for lime and GMB185 for black.
On paper
Pros & cons
What we like
- Properly stable platform with 36mm extending legs
- Useful supplied mix of deep and shallow storage
- Threaded leg caps on every leg for practical adjustment and accessories
- Padded removable shoulder strap with four-point fixing
- Durable textured footplate cover with spring-pin locking
Worth knowing
- At 18.5kg, it’s not exactly a featherweight carry to the peg
- The open footprint needs a fair bit of room on cramped swims
- You may want extra storage modules for longer or kit-heavy sessions
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Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01What storage comes with the Matrix S36 Pro Seatbox?
What storage comes with the Matrix S36 Pro Seatbox?
You get one deep drawer unit, one shallow tray and one transport lid, giving you a useful starting setup for terminal tackle, floats, feeders and small accessories.
02Are the legs adjustable?
Are the legs adjustable?
Yes. The box has extending 36mm legs with a textured anti-slip anodised finish, plus threaded leg caps on all legs for practical positioning and accessory use.
03Is the Matrix S36 Pro Seatbox easy to carry?
Is the Matrix S36 Pro Seatbox easy to carry?
There’s a removable padded shoulder strap with four-point fixing, which makes carrying more manageable. At 18.5kg, though, it’s still proper tackle rather than a lightweight perch seat.
What anglers say
The word from the bank
Our read: a cracking platform for proper match work. The strongest reasons to choose it are properly stable platform with 36mm extending legs and useful supplied mix of deep and shallow storage; the main trade-off is at 18.5kg, it’s not exactly a featherweight carry to the peg.
Our take on the feedback
Why it appeals
Checked Sept '26 — “Properly stable platform with 36mm extending legs”
Best fit
Checked Sept '26 — “Match anglers fishing canals, commercials and stillwaters: The stable 36mm platform, footplate and organised drawer-and-tray setup suit a busy match peg where quick access matters.”
Worth knowing
Checked Sept '26 — “At 18.5kg, it’s not exactly a featherweight carry to the peg”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Matrix S36 Pro Seatbox
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Owner reports
Own this? Help the next angler.
Quick multiple-choice reports from people who say they own the Matrix S36 Pro Seatbox. Not verified purchases, and kept separate from our score.
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