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Established 2006. Kent's Only Authorised 5.11 Tactical Retailer

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Built to disappear under your kit

The Kombat UK Spec-Ops UBACS in BTP Black is engineered for one job: to sit invisibly beneath a plate carrier, chest rig or body armour and keep you cool while you work. The elasticated ultra-flex torso moves with you, wicking sweat away and drying fast, so the fabric hidden under your rig never turns into a hot, damp layer mid-game.

Tough where it counts

Where a combat shirt actually takes punishment, on the sleeves, shoulders and collar, Kombat use a hard-wearing 65% cotton, 35% polyester ripstop. That is the abrasion-resistant part that shows above your armour, finished in British Terrain Pattern Black to blend with modern loadouts. A 1/4 length zip at the neck lets you dump heat in seconds or seal up when the temperature drops.

Protection you can remove

Each arm holds a slim, removable armour elbow pad, so you get cushioning for prone shooting and CQB without committing to bulk. Pull the pads out on a warm day and the shirt drops back to a light, breathable layer in moments.

Practical, patch-ready arms

Both sleeves feature angled tactical utility pockets, positioned for easy access to notepads and field aides, plus Velcro ID panels for morale and identification patches. It is a genuinely functional shirt, not just camo styling.

Why buy from Platoon Stores

We stock Kombat UK gear alongside a full range of skirmish-ready tactical clothing, with expert advice from a Kent airsoft retailer trading since 2006. No UKARA and no age check needed on this item.

General
BrandKombat UK
ColourBTP Black
Other
Clothing TypeUBACS
Elbow pads2 x removable armour pads
SizesS to 3XL
Product typeUBACS combat shirt (Under Body Armour Combat Shirt)
Colour / patternBTP Black (British Terrain Pattern)
Torso fabricElasticated ultra-flex stretch material
Sleeve / collar fabric65% cotton / 35% polyester polycotton ripstop
Body t-shirt weight220g cotton
Neck closure1/4 length zip
Arm pockets2 x angled tactical utility pockets
ID panels2 x Velcro loop panels (one per sleeve)
CuffsVelcro adjustable
SizeS, M, L, XL, 2XL, 3XL
Kombat UK UBACS Shirts Sizing
SizeSMLXL2XL3XL
Chest Circumference (Inches)384042444648

Frequently asked questions

What is a UBACS shirt?

UBACS stands for Under Body Armour Combat Shirt. It is built to be worn directly beneath a plate carrier, chest rig or body armour. The stretch torso stays cool and unseen under your kit, while the tougher ripstop arms and collar take the abrasion where your gear does not cover.

Are the elbow pads removable?

Yes. Each sleeve carries a slim armour elbow pad in an internal pocket, and both pads pull out completely. Keep them in for prone work and CQB, or remove them for a lighter feel on a hot skirmish day.

Is this shirt good for airsoft in summer?

It is one of the better warm-weather layers. The elasticated ultra-flex torso wicks sweat and dries fast, and the 1/4 zip vents heat quickly. Worn under a rig it keeps you far more comfortable than a standard cotton combat shirt.

Do I need to be 18 to buy this?

No. This is a clothing item with no age restriction and no UKARA requirement. Anyone can order it, whether you skirmish, work outdoors or want a durable tactical layer.

How should I choose my size?

The shirt runs in a fitted, athletic cut so it sits close under armour without bunching. If you plan to layer a base garment underneath or prefer a relaxed fit, consider sizing up one from your usual t-shirt size.