The Complete 2026 AMP Merch Size Guide for Hoodies and Tees

Complete Guide Overview

AMP's merch game has leveled up big-time in 2026. The new fall lineup, which dropped in July, brought the AMP Premium Hoodie back into the spotlight, and it's already the most talked-about piece in the group's catalog. But with a heavyweight 320gsm fleece and a structured streetwear cut, this isn't your average hoodie. Finding the right size matters more than ever.

If you're grabbing the hoodie for everyday wear, picking up the AMP Classic T-Shirt for a lighter look, or adding the polo or tank to round out the collection, the sizing can throw you off if you're not careful. AMP's garments are cut differently than standard mall-bought clothes. The bonus? They're built with more care. The downside is you can't trust your usual size number.

This guide walks you through the exact measurements for every top in the current AMP store lineup, explains how to measure yourself correctly, and gives you the kind of fit notes you'd normally get from a friend who already owns them. No fluff, just the stuff you need to click checkout with confidence.

One more thing: if you were part of the live crowd during Mafiathon 3 or tuned into "AMP vs. The World," you probably noticed the merch sold out within hours. That's why this guide exists - so when the restock hits, you'll already know your number.

How to Choose the Right Size

Measure Yourself (or an Existing Tee)

Grab a measuring tape. If you don't have one, a piece of string and a ruler works fine. Here's what to measure:

• Chest: Wrap the tape under your armpits and around the fullest part of your chest. Keep the tape snug but not tight.
• Waist: Measure around your natural waistline, right at the belly button.
• Hips: Stand with your feet together and measure around the fullest part of your hips. This matters if you want a hoodie that falls straight instead of flaring.

If you're using an existing shirt that fits well, lay it flat and measure:

• Pit to pit: Measure straight across from under one arm to under the other.
• Length: From the top of the shoulder seam to the bottom hem.
• Sleeve: From the shoulder seam to the end of the cuff.

That gives you the garment's dimensions, which you can directly compare to the charts below.

Know Your Fit Preference

This is where personal taste comes in. AMP's own members have different preferences. Agent 00 famously goes one size up for that cozy, oversized feel. Duke prefers his hoodies true to size so they don't bunch up when he moves around. Kai usually wears a size that fits but has a little room in the chest.

There are three basic categories:

• True to size: Get exactly your measured size. This gives you the "designed" look.
• Relaxed: Go one size up if you want extra room without completely losing shape.
• Oversized: Go two sizes up for a baggy, almost street-cast silhouette.

For heavyweight fleece like the AMP Premium Hoodie, going two sizes up can make the sleeves look a little long, so we generally recommend one size up for that look.

AMP Premium Hoodie Sizing

The flagship 2026 piece is the AMP Premium Hoodie, a 80% cotton, 20% polyester pullover with a brushed interior. That 320gsm fleece is noticeably heavier than typical fan merch. It's meant to hold its shape, but it also gives a little over time.

Here's the official size chart for the hoodie:

Chest width is measured flat from pit to pit. So for a person with a 42-inch chest, an XL gives you a total chest circumference of 50 inches. That's an 8-inch ease, which is comfortable. A large would give you 47 inches total - a slightly more snug fit.

The sleeve length is measured from the shoulder seam to the end of the cuff. If you're between sizes on both chest and sleeve, go with the chest measurement. Sleeves can shrink slightly after the first wash if you use high heat, which leads us to the next point.

In the "AMP Reacts: Hoodie Edition" video from June 2026, the group tested the hoodie on three different body types. Their takeaway was consistent: true to size for a clean, fitted look, one size up for all-day comfort. They also reminded everyone to wash in cold water and air dry to keep the fleece intact.

AMP Classic T-Shirt Sizing

The AMP Classic T-Shirt is a lighter, breathable tee that's become a summer staple. It's $24.99 and features a slightly dropped shoulder, giving it a relaxed streetwear feel without being oversized.

Here's the official size chart:

These measurements are for the garment laid flat. You'll notice the tee has less overall ease than the hoodie, but the drop shoulder makes it comfortable for most body types. If you're between sizes, we recommend sizing up for the tee because the cotton will breathe better and you can always layer it.

During Mafiathon 3, Kai wore a white Classic Tee for a full day and mentioned how the collar didn't stretch out by the end. That's a good sign for a $24.99 shirt. Just don't toss it in the dryer; let it air dry to keep that collar quality.

Other Tops: Polo and Tank

The AMP Polo Shirt ($34.99) runs slightly slimmer than the tee. If you usually wear a large in the Classic Tee, you might want to go up to an XL in the polo, especially if you plan to wear it for a more polished look. The AMP Tank Top ($19.99) follows the chest width of the tee but shorter length, so use the tee's chest measurement and go with the shorter length.

When in doubt, measure your favorite existing top and compare it to the appropriate size chart.

Caring for Your AMP Merch

Heavyweight fleece and quality prints need a little love. Here's how to keep your AMP gear looking fresh:

• Wash inside out in cold water. This protects the logo and graphics.
• Use a gentle detergent. Skip the bleach and fabric softeners - they break down the cotton fibers.
• Tumble dry on low or air dry. The hoodie's brushed interior stays softer if you go easy on the heat.
• Don't iron directly over the design. If you need to get wrinkles out, turn it inside out or use a low-temp setting.

In their 2026 "How to Wash Your Merch" stream, AMP's Duke showed a fan whose hoodie had cracked print after a hot wash. His advice: "Cold water, low heat, and you'll have this for years."

Where to Buy Official Merch

The safest place to order is the official AMP store. You can browse AMP's hoodie collection to see all the hoodie options, or explore the full collection for shirts, tanks, accessories, and more. The homepage at the official AMP store is where new drops go live first.

A note on counterfeits: if a price looks too good to be true, it's a fake. The AMP Premium Hoodie retails for $49.99, and knockoff sites often list it for $25 or $30, but the fabric and print won't match the official quality. Stick to the official site and verify the URL before entering payment info.

FAQ

How does the AMP Premium Hoodie fit compared to other hoodies?

The hoodie fits true to size for a modern regular fit. If you want a more classic, oversized look, consider ordering one size up. The 320gsm fleece is heavier than typical fan merch, so it drapes nicely without feeling too bulky.

Should I size up or down for the AMP Classic T-Shirt?

Most people stick with their usual size. The tee has a relaxed drop shoulder, so it already feels slightly less fitted than a typical crewneck. If you prefer a true oversized look, size up once, but be aware that the sleeves will also get longer.

What if I'm between sizes?

For the hoodie, go with the smaller size for a cleaner fit, or the larger size if you want extra room. For the tee, we'd say the same, but it also depends on how you plan to layer it. The measurements in the size charts are a good tiebreaker.

Can I return or exchange my AMP merch if the size is wrong?

The official store has a standard return policy, but processing times can vary around big drops. It's always a good idea to check the product page for the latest info. If you're ordering from one of their limited-time collabs, be extra careful with sizing because those items often sell out fast.

Are the size charts the same for all AMP products?

No. The hoodie, tee, polo, and tank each have slightly different cuts, so always check the size chart on the specific product page. The measurements in this guide are accurate as of mid-2026, but official size charts can be updated with new releases. - -

If you're looking for something connected to this moment, the AMP Premium Hoodie is a good place to start. It's the piece that defined the 2026 drop, and with the right size, it'll be the one you reach for all year. - -

Ready to grab yours? Check out the AMP Premium Hoodie in the store.