What to Wear to Your First BJJ Class: A Beginner's Complete Guide

Last Updated: May 17, 2026 Reading Time: 7 minutes Author: King Killers Team

The First-Day Fear Is Real

Walking into a BJJ gym for the first time is intimidating. Everyone else knows what they're doing. They're tying belts you've never seen. They're speaking a language of positions and submissions that sounds like code.

The last thing you need is to worry about your clothes.

At King Killers, our team includes BJJ brown and purple belts who remember their first day. We've put together this guide so you walk in confident, comfortable, and ready to learn — not worried about what you're wearing.

Gi vs. No-Gi: Which Class Are You Attending?

Before you choose your outfit, know which class you're walking into.

Gi Classes

• What it is: BJJ practiced in the traditional uniform (kimono)
• What you wear: A BJJ gi, rash guard underneath, belt (provided by gym)
• What to know: Gyms usually loan gis for your first few classes. Don't buy one until you're sure you'll stick with it.
• Cost if you buy: $60–$120 for a starter gi

No-Gi Classes

• What it is: BJJ without the kimono — grabbling in shorts and rash guards
• What you wear: Fight shorts + rash guard
• What to know: Most gyms are 70% no-gi now. Check the schedule.
• Cost if you buy: $30–$70 for shorts + rash guard

Pro tip: Call the gym before your first class and ask, "Is this a gi or no-gi class?" Most gyms are happy to answer. Some have loaner gis; others expect you to show up in athletic wear.

What to Wear If You Don't Have a Gi Yet

Most gyms let you take your first class in regular athletic wear. Here's what works:

For No-Gi Classes:

• Top: Athletic t-shirt or compression shirt (tight-fitting)
• Bottom: Athletic shorts without zippers, pockets, or buttons
• Why tight-fitting: Loose clothing gets grabbed, twisted, and can trap fingers

For Gi Classes (without a gi):

• Top: T-shirt or compression shirt
• Bottom: Athletic shorts or sweatpants
• Note: The gym will loan you a gi to wear over this

What NOT to Wear:

• ❌ Basketball shorts with pockets (fingers get caught)
• ❌ Loose tank tops (they ride up, get twisted, expose skin)
• ❌ Jewelry of any kind (watches, rings, necklaces — dangerous for you and partners)
• ❌ Cotton t-shirts that get heavy with sweat
• ❌ Anything with zippers, buttons, or metal

The Beginner Gear Checklist

Once you're committed (usually after 2–4 weeks), here's what to buy:

1. Rash Guard — Your Base Layer

A rash guard isn't optional for no-gi. It protects your skin from mat burn, wicks sweat, and stays in place during scrambles.

What to look for:

• Flatlock stitching (won't chafe)
• Long sleeves (more protection)
• Sublimated print (won't peel)
• Snug fit (won't get grabbed)

Our pick: King Killers Long-Sleeve Rash Guards — Built for the grind. Flatlock seams. Sublimated designs. Compression fit that stays put.

Price: $32–$40

2. Fight Shorts — Your Foundation

Regular gym shorts don't survive BJJ. You need shorts designed for grappling.

What to look for:

• 4-way stretch fabric
• Velcro + drawstring waistband (won't slip)
• No pockets or zippers (safety)
• Side slits (mobility for guard work)

Our pick: King Killers No-Gi Shorts — Grappling-tested fabric. Reinforced seams. 4-inch side slits. No pockets, no zippers, no problems.

Price: $35–$45

3. Spats (Optional but Recommended)

Spats are compression pants worn under shorts. They prevent mat burn on your knees and shins, keep muscles warm, and add a layer of hygiene protection.

Our pick: Any quality spats from your gym's pro shop or King Killers compression gear.

Price: $25–$35

4. Mouthguard — Don't Skip This

Even in "light" rolling, accidental impacts happen. A mouthguard is non-negotiable once you start sparring.

Recommendation: SISU Aero or Impact Custom. Both are comfortable enough to breathe and talk in.

Price: $25–$35

What to Bring to Your First Class

Beyond clothing, here's your first-day checklist:

Hygiene: The Unspoken Rule

BJJ is a contact sport. You'll be sweating on strangers and they'll be sweating on you. Hygiene isn't optional.

Before class:

• Shower or at least wash your face, hands, and feet
• Trim your fingernails and toenails (long nails cut people)
• Tie back long hair
• Remove all jewelry

After class:

• Shower immediately
• Wash your gear after every session (rash guards, shorts, gi)
• Don't leave gear in your gym bag overnight (it'll mold)

What to Expect on Day One

Most first classes follow this structure:

1. Warm-up (10–15 min): Shrimping, forward rolls, backward rolls, hip escapes. These movements feel weird at first. That's normal.

2. Technique demonstration (15–20 min): The instructor shows 1–2 techniques. Pay attention. Take mental notes.

3. Drilling (15–20 min): Practice the technique with a partner. Go slow. Focus on form, not speed.

4. Open mat / Rolling (10–30 min): Live sparring. Many gyms don't have beginners roll on day one. If they do, tap early and often. Your goal is to learn, not to win.

Real Beginner Stories

"I wore basketball shorts to my first class. The pockets ripped, my phone fell out, and I got mat burn on my knees. I bought proper fight shorts before my second class." — Jake M., 6-month white belt

"No one told me to cut my nails. I accidentally scratched my training partner's neck. He was cool about it, but I felt terrible. Now I check my nails before every class." — Lisa R., 1-year white belt

"I thought I needed a gi for my first class. The gym loaned me one, but it was two sizes too big. I looked like a kid in his dad's clothes. Still had a blast." — Tony D., 3-month white belt

FAQ: First BJJ Class

Do I need to buy a gi before my first class?

No. Most gyms loan gis for your first few classes. Buy one only after you're sure you'll stick with BJJ.

What if I don't have fight shorts?

For your first class, wear athletic shorts without pockets or zippers. Once you're committed, invest in grappling-specific shorts.

How much does beginner BJJ gear cost?

• Minimum: $0 (loaner gi + athletic wear you already own)
• Basic kit: $60–$100 (rash guard + shorts)
• Full setup: $120–$200 (rash guard, shorts, spats, mouthguard, gi)

Can I wear a regular t-shirt?

You can for your first class, but cotton gets heavy with sweat and can be grabbed. A compression shirt or rash guard is worth the investment.

What if I'm out of shape?

BJJ is how you get in shape. Everyone starts somewhere. The only requirement is showing up.

Will I get hurt?

Minor bumps and bruises are normal. Serious injuries are rare in beginner classes. Tap early, communicate with partners, and you'll be fine.

Conclusion: Show Up, Stay Consistent

The gear matters, but it doesn't matter as much as showing up. Your first class will feel overwhelming. Your second will feel slightly less overwhelming. By your tenth class, you'll feel like you belong.

Invest in quality gear once you're committed. Until then, wear what you have, follow the hygiene rules, and focus on learning.

At King Killers, we make gear for the fighters who show up day after day. When you're ready to upgrade from loaner gis and cotton t-shirts, we've got you covered.

Ready to gear up?

🥊 Shop BJJ Beginner Gear

About King Killers

King Killers is a fighter-owned combat sports apparel brand based in St. Petersburg, Florida. Our team includes active BJJ competitors, Muay Thai fighters, and MMA athletes who design and test every piece of gear we sell. We build apparel for the grind.

This post was last updated on May 17, 2026. Product prices and availability are subject to change.