420 GSM Heavyweight Boxy T-Shirt | SIGNAL MX Signature

Name: 420 GSM Heavyweight Boxy T-Shirt | SIGNAL MX Signature
Brand: REALLY COOL®
Price: 179 USD
Availability: InStock

US$179.00

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Quantity

420 GSM organic cotton single jersey. Architectural Boxy fit. Crewneck. Softly peached face. Contrast embroidery.

A 420 GSM heavyweight boxy T-shirt with a soft, matte surface and a clear black-and-white signature. SIGNAL MX Signature brings together dense organic cotton single jersey and face-only Triple Carbon Peach, a three-stage mechanical finish that creates a fine, softly peached cotton face.

The Architectural Boxy cut gives you generous chest room, controlled dropped shoulders, and wide short sleeves without unnecessary body length. A crewneck and straight, non-cropped hem keep the outline clean. Internal Mobilon shoulder reinforcement and dimensional stabilization support the intended proportions.

Choose black with raised white tiger-head embroidery or white with raised black embroidery. The contrast stays focused on the chest, leaving the fabric and silhouette in view.

Wear it on its own with denim or under an open jacket. Within our heavyweight essentials, MX pairs a defined fit with a softer surface. BX Armor offers the same finished measurements with an unbrushed face.

Detail	Specification
Product family	420 GSM Signature Jersey
Main fabric	100% organic cotton, high-density single jersey
Main fabric weight	420 GSM, 420 grams per square meter
Neckline	Crewneck
Surface finish	Face-only Triple Carbon Peach; finely peached, matte cotton
Fit	Architectural Boxy; same finished measurements as BX Armor
Sleeves	Dropped-shoulder, set-in short sleeves
Shoulder construction	Internal Mobilon reinforcement
Shape-setting process	Dedicated high-temperature dimensional stabilization
Seam construction	Three-needle, five-thread reinforcement at designated seams
Bottom hem and sleeve openings	Clean, turned self-fabric finishes
Branding	Raised contrast tiger-head chest embroidery and woven side label
Colors	Black with white embroidery / White with black embroidery
Size range	XS–2XL; unisex

Triple Carbon Peach refines the outer face; it does not change MX into a different fit or a different fabric family. SIGNAL adds contrast embroidery to the solid black or white body, without STRATA’s decorative washed-color treatment.

Our size labels are intentionally generous. Start with the body-chest guide, then compare a T-shirt you already own with the finished garment measurements below. Use the measurements rather than relying on your usual size label.

At the boundary between sizes, choose according to your preferred proportions and the garment chart.

Recommended Body Chest

Size	Body chest - cm	Body chest - inches, approx.
XS	92–102	36.2–40.2
S	102–112	40.2–44.1
M	112–122	44.1–48.0
L	122–132	48.0–52.0
XL	132–142	52.0–55.9
2XL	142–152	55.9–59.8

Finished T-Shirt Measurements - MX Signature / BX Armor

Size	Half chest	Body length	Shoulder	Sleeve
XS	58 / 22.8	70 / 27.6	53 / 20.9	21 / 8.3
S	63 / 24.8	72 / 28.3	55 / 21.7	22 / 8.7
M	68 / 26.8	74 / 29.1	57 / 22.4	23 / 9.1
L	73 / 28.7	76 / 29.9	59 / 23.2	24 / 9.4
XL	78 / 30.7	78 / 30.7	61 / 24.0	25 / 9.8
2XL	83 / 32.7	80 / 31.5	63 / 24.8	26 / 10.2

How to Measure

Measurement	Method
Body chest	Measure around the fullest part of your chest with the tape level and relaxed. This is a body circumference, not a garment width.
Half chest	Lay the T-shirt flat and measure straight across between the underarm/side-seam intersections. Do not measure 2.5 cm below the armholes.
Body length	Measure from the high shoulder point at the neck seam to the finished bottom edge, excluding collar height. Include the ribbed hem on EX.
Shoulder width	Measure straight across the back between the shoulder-to-sleeve seam points.
Sleeve length	Measure along the upper sleeve from the shoulder-to-sleeve seam to the finished sleeve opening.

Measure the garment dry and relaxed, without stretching it. For additional help, see the Size & Fit Guide.

SIGNAL puts the contrast in the embroidery. Each garment has a solid black or white body with a raised tiger-head design in the opposite color.

Color option
Garment color
Chest embroidery
Black
Solid black
Raised white tiger-head embroidery
White
Solid white
Raised black tiger-head embroidery

The contrast design is shared across MX Signature, BX Armor, WX Core, and EX Essential. Each series keeps its own surface finish, fit, and hem construction. SIGNAL does not use VOID’s tonal embroidery or STRATA’s additional decorative washed-color finish.

The figures below are REALLY COOL®’s published reference results for the 420 GSM single-jersey material platform. They describe specific material tests, not the weight or performance of every finished garment.

Property	Brand-reported reference	Method reference
Length change after 50 wash cycles	−0.9%	ISO 6330 procedures
Width change after 50 wash cycles	−1.1%	ISO 6330 procedures
Hydraulic bursting strength	1,143 kPa	ISO 13938-1
Pilling resistance	Grade 4–5	ISO 12945-2

These are brand-reported material references, not individual test results for every STRATA color, finish, size, or production lot. The bursting and pilling results should not be read as results measured after 50 washes. Fabric testing does not replace garment-specific care.

Explore The Tactile Paradox for our approach to fabric and construction.

Care step	Instruction
Wash	Machine wash cold, maximum 30°C / 86°F. Turn inside out and wash with similar colors. Wash dark colors separately.
Bleach	Do not bleach.
Dry	Do not tumble dry. Gently reshape and line dry in the shade.
Iron	Use low heat on the reverse only if permitted by the garment care label. Avoid direct heat or pressure on the embroidery.

Always follow the care label attached to your garment.

Four series, two fits, one 420 GSM single-jersey foundation. All four STRATA T-shirts come in Burnt Umber and Dark Earth with a controlled washed finish and white contrast embroidery.

Series	Fit	Surface	Bottom hem
MX Signature	Architectural Boxy	Face-only Triple Carbon Peach	Clean self-fabric hem
BX Armor	Architectural Boxy	Unbrushed	Clean self-fabric hem
WX Core	Oversized Relaxed	Unbrushed	Clean folded hem
EX Essential	Oversized Relaxed	Unbrushed	2.5 cm body-color ribbed hem

MX and BX share their finished dimensions. WX and EX share a longer, roomier set of dimensions. The EX ribbed hem is included in the finished body length.

Question	Answer
How does SIGNAL MX differ from SIGNAL BX?	They share the Architectural Boxy pattern, finished dimensions, and reinforced shoulder construction. MX has face-only Triple Carbon Peach for a softer, matte surface. BX keeps the jersey face unbrushed.
Is this a cropped boxy T-shirt?	No. The body is relatively compact but not cropped. WX Core and EX Essential use a separate, longer and roomier Oversized Relaxed pattern.
Is the chest design printed?	No. The tiger-head design is raised embroidery: white on the black T-shirt and black on the white T-shirt.

Topic	Details
Destinations	Shipping is available to selected international destinations. Available methods, charges, and delivery estimates appear at checkout.
Processing	Orders are typically processed within 1–3 business days after confirmation. Processing time is separate from shipping time.
Returns	Eligible return requests must be submitted within 16 days of delivery, subject to the Returns & Exchanges Policy and applicable consumer rights.
Condition	Returned items must meet the policy requirements, including being unworn, unused, unwashed, and returned with original tags attached.
Exchanges	Subject to approval, product availability, and destination requirements.

Read the Shipping & Delivery Policy and Returns & Exchanges Policy for complete terms.

420 GSM Heavyweight Boxy T-Shirt | SIGNAL MX Signature

Fabric & Materials

Size & Fit

SIGNAL Colors & Embroidery

Material Performance

Care Instructions

Compare the Four T-Shirt Series

Product Questions

Shipping & Returns

Color option	Garment color	Chest embroidery
Black	Solid black	Raised white tiger-head embroidery
White	Solid white	Raised black tiger-head embroidery