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SIGMA TEE - Muscle Enhancing Shirt

SIGMA TEE - Muscle Enhancing Shirt

Look Better. Feel More Confident.
 5/5 (223) · Feel Confident
Fill out your shirts in the right places
A discreet layer under your favorite outfits
Get dressed feeling more confident
Choose your offer
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Free gifts included for the next 33 orders!
Free Shipping

SIGMA TEE™ orders are processed within 2–4 business days and then shipped to your destination.

Delivery typically takes 7–14 business days after dispatch, depending on your location.

  • Free and insured shipping on all orders.
  • Tracking information provided once your order ships.

Please allow the processing time above before your order is dispatched. You can follow your delivery using the tracking details sent to you.

Returns & Order Support

For return eligibility, conditions and order issues, please read our Refund Policy. Contact us at velloraestore@gmail.com and include your order number. Returns require prior authorization.

Product Details

SIGMA TEE™ Muscle Enhancing Shirt

  • Includes: 1× shirt in your selected size and color.
  • Padding: Shoulders, upper arms, chest, and six abdominal pads.
  • Design: Short sleeves and a fitted base layer.
  • Wear: Under your favorite T-shirt, button-down, or sweater.
  • Sizing: Check the size guide before ordering.
Shipping & order adjustments

Enjoy free tracked shipping worldwide. We will email your tracking link as soon as your order leaves us. Please allow approximately 1–2 weeks for delivery.

Cancel your order within 24 hours for a full refund. After 24 hours, all sales are final. Chosen the wrong size or color? We can change it for free before dispatch. Send your order number to velloraestore@gmail.com.

If your shirt arrives damaged or incorrect, or the parcel is lost in transit, get in touch within 7 days and we will arrange a replacement.

Who can help with my SIGMA order?

You can message us at any time through our Contact page. A member of our team will get back to you within 24 hours. Include your order number so we can look into your enquiry.

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SIGMA TEE$102.58 USD · Duo

 See the SIGMA TEE Difference 

AS SEEN ON: VOGUE Esquire Men's Health GQ AS SEEN ON: VOGUE Esquire Men's Health GQ AS SEEN ON: VOGUE Esquire Men's Health GQ
Model wearing the white SIGMA TEE muscle-look shirt

THE WHITE EDITION

Your shirt. A fuller fit.

Add shape through the shoulders, chest and arms with the white SIGMA TEE. Wear it under your favorite outfit for a fuller silhouette, or make it part of a bold costume look.

Shoulder, chest and arm padding
Model wearing the black SIGMA TEE muscle-look shirt

THE BLACK EDITION

A bolder look in black.

The same muscle-look shape in classic black. Style it with darker outfits, cosplay or a playful transformation. Pick your color and use the size guide to find your fit.

Available in sizes S, M, L and XL
SIGMA TEE size guide by height and weight, sizes S, M, L and XL

SIZE GUIDE

Find your size.

Match your weight to your height range in the chart. If you are between sizes, choose the larger size for a more comfortable fit.

Sizes S–XL · Height & weight guide
BETTER SHIRT FIT · ADDED SHAPE · MORE CONFIDENCE · SIGMA TEE™ BETTER SHIRT FIT · ADDED SHAPE · MORE CONFIDENCE · SIGMA TEE™ BETTER SHIRT FIT · ADDED SHAPE · MORE CONFIDENCE · SIGMA TEE™ BETTER SHIRT FIT · ADDED SHAPE · MORE CONFIDENCE · SIGMA TEE™

 See the Silhouette Difference 

From an unpadded tank-top look to a fuller, styled silhouette. Drag the slider to compare the two looks.

Illustration of a fuller shirt fit with SIGMA TEE Illustrative unpadded look: the same model with a lean build in a plain white tank top BEFORE AFTER ↔
Plain tank top · No padded layerFuller shoulders & chest

Illustrative styling comparison; clothing differs between views. Actual appearance varies with size, body shape and clothing.

 
 

Frequently Asked Questions

Will people notice I'm wearing it?
SIGMA TEE adds shape beneath your clothes. For a more discreet look, wear it under a regular-fit shirt or sweater. The padding may show through very thin or tight fabrics.
What can I wear it under?
Wear it under your favorite button-down, casual shirt, or sweater. Regular-fit clothing gives the added shape room without hugging every detail of the padding.
How do I choose my size?
Check the size guide before ordering. Available sizes are S, M, L, and XL. If you're between sizes, choose the larger available size for a more comfortable fit. If your measurements fall outside the guide, contact us before ordering.
How does SIGMA TEE work?
Put on SIGMA TEE as your first layer, then wear your shirt over it. Padding in the shoulders, chest, and arms adds shape to the way your clothes fit.
Will it look the same on me?
The final look depends on your body shape, the size you choose, and the fabric and fit of your outer shirt. The comparison is a visual reference, so your result may vary.
 
 
 
 

Customer Reviews

★★★★★5.0223 Reviews
Alex M.✓ Verified
★★★★★

Nice for occasions when I want a cleaner fit. Comfortable enough, though I wouldn’t wear it in very hot weather.

Nathan C.
★★★★★

It stayed in place throughout the day. I was worried it would bunch up, but it didn’t

Justin W.✓ Verified
★★★★★

Bought the black one first, then ordered white. Both fit the same for me.

Matthew F.✓ Verified
★★★★★

I’m pretty slim, and this helped my shirts sit better on my shoulders.

Christopher R.✓ Verified
★★★★★

Good fit around the waist and arms. Took me a minute to get used to the padded feel.

Andrew C.✓ Verified
★★★★☆

I like that it doesn’t look exaggerated. It just fills out my clothes a bit more.

Kevin P.✓ Verified
★★★★★

The material is soft enough for a few hours of wear. I wouldn’t size down.

Brandon H.
★★★★★

Better than I expected. The chest has a subtle shape, especially under a slightly loose shirt.

Ryan C.✓ Verified
★★★★★

Wore it out for dinner and felt more comfortable with how my shirt fit. Simple as that.

Daniel B.✓ Verified
★★★★★

The shoulders look good. I’d recommend checking the size chart because mine fit a little snug

Jason M.✓ Verified
★★★★★

I bought it for a wedding. It gave my dress shirt a better shape without feeling too bulky

Michael T.✓ Verified
★★★★★

Fits well under a regular shirt. The padding is noticeable when you hold it, but looks pretty natural once it’s on.