MMA Size & Fit Guide (UK): Chaos Training Tee + 2-in-1 Shorts

Buying fightwear shouldn’t be guesswork. This is the DEUS Chaos Range fit guide — how your kit should fit for MMA rounds (striking, grappling, conditioning), and how to pick the right option between 2-in-1 and High Split 2-in-1.

Quick fit rules (read this in 30 seconds)

Chaos Training Tee

• Athletic fit through shoulders/chest

• Not clingy on the midsection

• Sleeves shouldn’t flap or fold up when you’re moving

Chaos 2-in-1 Shorts

• Waistband sits locked (no twisting when you shoot/wrestle)

• Outer short gives you room to move

• Inner short is snug on the thighs (support + less chafe)

Chaos High Split 2-in-1 Shorts

• Same locked waist + inner support

• More freedom at the hip for kicks, sprawls, scrambles

• Best if you hate restriction or you’ve got bigger legs

How the Chaos Training Tee should fit

A training tee for MMA needs to sit right in the shoulders and stay put when you’re framing, pummeling, or drilling takedowns.

Your correct fit looks like:

• Shoulder seams sit on the shoulder (not hanging off)

• Chest feels fitted but you can still breathe deep

• Length stays put when your hands are above your head

• No excess fabric at the lower back

If you’re between sizes:

• If you want a clean athletic fit, go down.

• If you prefer a looser training fit, go up.

Common mistake: sizing up so it turns into a wet towel when you sweat.

How 2-in-1 Shorts should fit (Chaos 2-in-1)

2-in-1 shorts are built for the ugly parts of training: sweat, friction, scrambling, knees to body, wall work.

Outer short (top layer)

• Should feel free through the hips

• You should be able to knee high without the short pulling tight

Inner short (compression layer)

• Should be snug on the quads

• Shouldn’t roll up at the hem

• Shouldn’t pinch behind the knee

Waistband (most important)

• You should be able to shoot a double without the waistband shifting

• If you’re constantly tightening the drawcord mid-session, it’s too big

If you’re between sizes:

• If your waist is smaller but your legs are big: pick the size that fits your waist, not your thigh. The inner is meant to be snug.

• If you hate compression: choose the bigger size, but accept the waistband may move more.

High Split 2-in-1 vs Standard 2-in-1 (which one should you pick?)

Choose Chaos 2-in-1 Shorts if you want:

• A more “all-rounder” short for MMA + gym

• A slightly more covered feel

• Solid movement without the extra split

Choose Chaos High Split 2-in-1 Shorts if you:

• Kick a lot (or train Muay Thai alongside MMA)

• Wrestle hard / sprawl constantly

• Have bigger quads and want zero restriction

• Prefer maximum hip freedom

Simple rule: if you’ve ever thought “shorts hold me back” — go High Split.

Fit checks you can do at home (takes 10 seconds)

Tee check

• Raise both arms overhead — tee shouldn’t ride up and expose your whole stomach.

• Shadowbox — sleeves shouldn’t flap or fold.

Shorts check

• Do 5 deep squats — waistband shouldn’t shift.

• Throw 5 kicks each side — shorts shouldn’t bind at the hip.

• Do a sprawl — inner short shouldn’t pinch or roll.

Common sizing problems (and what they mean)

“My inner short rides up.”
Usually too big, or you want a tighter compression feel.

“Waistband twists or slides.”
Too big in the waist — size down.

“Outer short feels tight when I kick.”
High Split is likely the better option (or size up if you’re right on the edge).

“Tee clings loads when I sweat.”
You’ve sized up and created extra fabric — consider sizing down for a cleaner fit.

Care tips (so it stays looking fresh)

• Wash cold, inside out

• No fabric softener

• Air dry (tumble drying kills performance fabrics faster)

Shop the Chaos Range

• Chaos Training Tee

• Chaos 2-in-1 Shorts

• Chaos High Split 2-in-1 Shorts

Chaos isn’t a vibe. It’s the session. Dress for it.