SIGNAL MX Signature - 420 GSM Heavyweight French Terry Pullover Hoodie
The SIGNAL MX Signature French terry pullover hoodie is crafted from 420 GSM organic cotton, with our Triple Carbon Peach finish creating a soft, matte exterior while natural cotton loops remain unbrushed on the inside.
Cut in our Architectural Boxy Fit, it features a generous chest, dropped shoulders and full-length sleeves for a relaxed yet defined silhouette. A drawstring-free double-layer hood, wide kangaroo pocket and ribbed trims complete the design.
SIGNAL introduces bold contrast to our heavyweight essentials. Black features raised white tiger-head embroidery, while White is finished with raised black embroidery, making the signature artwork a distinct part of the design.
Substantial in weight, refined in feel and defined by contrast, this heavyweight hoodie is designed for everyday wear and effortless layering.
Feature
Details
Product Family
420 GSM Signature Loopback Jersey
Main Fabric
3-End French Terry
Main Fabric Composition
100% Organic Cotton
Fabric Weight
420 GSM Heavyweight
Outer Surface
Dense, smooth jersey-appearance face
Inner Surface
Natural Unbrushed Loopback Reverse
MX Signature Finish
Face-Only Triple Carbon Peach
Fit
Architectural Boxy
Shoulder
Dropped Shoulder
Sleeve Construction
Full-Length Set-In Sleeves
Hood
Double-Layer, Drawstring-Free
Outer Hood Fabric
420 GSM Organic Cotton French Terry
Hood Lining
Color-Matched Organic Cotton Single Jersey, 220–260 GSM
Front Pocket
One Wide Kangaroo Patch Pocket
Sleeve Cuffs
2×2 Ribbed, 7 cm
Bottom Hem
2×2 Ribbed, 7 cm
Rib Composition
95% Organic Cotton / 5% Elastane
Branding
Raised Contrast Tiger-Head Embroidery
Colorways
Black / White
Gender
Unisex
Sizes
XS / S / M / L / XL / 2XL
The main body, sleeves, outer hood and kangaroo pocket are made from organic cotton French terry. The hood features a lighter organic cotton jersey lining, while the ribbed cuffs and hem use a separate cotton/elastane blend for fit and recovery.
The 420 GSM fabric weight refers to the main French terry fabric, not the complete garment.
420 GSM French Terry - Substantial by Nature
This hoodie begins with our 420 GSM organic cotton French terry, developed with a dense, smooth outer surface and natural, unbrushed cotton loops on the inside.
Unlike a brushed fleece hoodie, the interior retains its knitted loopback character. The substantial fabric gives the garment body and presence while remaining comfortable for everyday wear and layering.
Triple Carbon Peach - The MX Signature Touch
MX Signature adds our Triple Carbon Peach finish to the outer face of the French terry.
The carefully softened surface feels smoother against the hand and gives the fabric a subtle matte appearance, without taking away its substantial character.
The inner cotton loops remain unbrushed, creating a clear contrast between the refined exterior and the natural loopback interior.
SIGNAL Contrast - Defined by Difference
SIGNAL expresses our heavyweight essentials through a clean black-and-white palette and contrasting embroidery.
Black: A deep black body with raised white tiger-head embroidery. The sharp contrast brings definition to the artwork while maintaining the simplicity of the silhouette.
White: A clean white body with raised black embroidery. The dark detailing creates a distinct focal point against the softly peached cotton surface.
Both colorways retain the refined matte exterior of MX Signature, allowing contrast, fabric and shape to work together without unnecessary decoration.
Architectural Boxy Fit - Room Without Excess
Designed around our dedicated heavyweight sweatshirt pattern, this hoodie features a generous chest, dropped shoulders and full-length set-in sleeves.
The cut is relaxed and substantial, with enough room for comfortable movement and layering. It is intentionally boxy, but not cropped or excessively oversized.
The 7 cm ribbed cuffs and bottom hem finish the silhouette without sharply tightening the wrists or waist.
Double-Layer Hood - Clean by Design
The double-layer hood features a substantial French terry exterior and a lighter organic cotton jersey lining.
Designed without drawstrings, eyelets or visible hardware, the clean opening keeps the neckline simple and lets the fabric and silhouette take the lead.
A carefully finished hood attachment provides a neat transition from the neckline to the hood.
Kangaroo Pocket - Everyday Function
One wide kangaroo pocket sits at the center front, with two angled hand openings connecting to a single usable pocket space.
Reinforced pocket entries and matching stitching support everyday use while keeping the front design clean and balanced.
The pocket uses the same 420 GSM French terry as the main body for a consistent appearance and feel.
Raised Contrast Tiger-Head Embroidery - A Distinct Signature
Our signature tiger-head artwork is embroidered in raised contrast thread at the left chest.
White embroidery stands out against the black body, while black embroidery creates a strong visual definition on the white colorway.
The raised threadwork adds texture and dimension to the clean design, bringing a recognizable REALLY COOL® identity to both SIGNAL colorways.
Our 420 GSM French terry is developed around defined standards for fabric weight, wash performance, surface durability and colorfastness.
Performance Metric
Standard / Method
Finished Main Fabric Weight
420 GSM ±5%
Fabric Weight Test
ASTM D3776/D3776M
Dimensional Change
No more than 5% in absolute length or width
Fabric Dimensional Change
AATCC TM135
Garment Dimensional Change
AATCC TM150
Garment Twist
No more than 3%
Garment Twist Test
AATCC TM179
Pilling Resistance
Grade 4 or higher
Pilling Test
ISO 12945-2
Wash Colorfastness
Grade 4 or higher
Washing Test
ISO 105-C06
Rubbing Colorfastness
Grade 4 or higher
Rubbing Test
ISO 105-X12
Fabric weight is only one part of a well-made hoodie.
We also consider how the fabric responds to washing, how the outer surface holds up to wear, and how the finished garment maintains its intended shape.
The hood, pocket openings, ribbed trims and embroidery are also part of our garment-level quality checks.
These figures represent the defined performance and acceptance standards for our French terry program, rather than individual measured results for every finished colorway.
For more on our approach to material quality, explore The Tactile Paradox.
Architectural Boxy Fit
The REALLY COOL® MX Signature and BX Armor pullover hoodies share the same dedicated Architectural Boxy pattern, developed for the weight and structure of our 420 GSM French terry.
Both feature a generous chest, dropped shoulders, full-length set-in sleeves and a ribbed hem that completes the shape without excessive tapering.
The fit is intentionally roomy and substantial, but not cropped or excessively oversized.
Size Reference
Our size M is designed for the body proportions of someone who commonly wears a men's XL in many US or European brands, while delivering the intended REALLY COOL® boxy fit.
This is a fit recommendation, not a universal size conversion. For the best fit, compare the measurements below with a hoodie you already own.
Unisex Size Guide - Recommended Body Chest
Size
Chest (cm)
Approx. Inches
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 Raglan Sweatshirt Measurements (cm / inch)
Size
Half Chest
Body Length
Shoulder
Sleeve
XS
58 / 22.8
70 / 27.6
53 / 20.9
59 / 23.2
S
63 / 24.8
72.5 / 28.5
55 / 21.7
60 / 23.6
M
68 / 26.8
75 / 29.5
57 / 22.4
61 / 24.0
L
73 / 28.7
77.5 / 30.5
59 / 23.2
62 / 24.4
XL
78 / 30.7
80 / 31.5
61 / 24.0
63 / 24.8
2XL
83 / 32.7
82.5 / 32.5
63 / 24.8
64 / 25.2
Measurements are taken with the garment laid flat and relaxed.
Half Chest: Measured straight across the chest, 2.5 cm below the underarm.
Body Length: From the high shoulder point to the finished bottom edge, including the 7 cm hem rib.
Shoulder Width: Across the back between the shoulder and sleeve seam intersections.
Sleeve Length: From the shoulder seam to the finished cuff edge, including the 7 cm cuff rib.
For the most reliable fit, compare these measurements with a hoodie you already enjoy wearing.
If you prefer the intended structured, roomy silhouette, choose the size that best matches your body chest measurement.
For more information, see our Size & Fit Guide for more information.
Our 420 GSM heavyweight pullover hoodies are available in two series: MX Signature and BX Armor.
Both share the same organic cotton French terry foundation, Architectural Boxy Fit, unbrushed loopback interior, drawstring-free double-layer hood and wide kangaroo pocket.
The difference lies in how the outer fabric looks and feels.
Series
Fit
Defining Surface
MX Signature
Architectural Boxy
Softly peached, matte exterior
BX Armor
Architectural Boxy
Clean, unbrushed exterior
MX Signature - The Tactile Expression
Our Triple Carbon Peach finish softens the outer face of the French terry, creating a smoother hand feel and a refined matte appearance.
The unbrushed loopback interior retains its natural knitted character.
BX Armor - The Structured Expression
BX Armor keeps the exterior unbrushed, allowing the clean, dense knit surface to define the fabric's appearance.
It shares the same substantial 420 GSM foundation and boxy silhouette as MX Signature.
SIGNAL: High-contrast black and white designs with contrasting tiger-head embroidery.
VOID: A quieter, tonal interpretation with black-on-black or white-on-white embroidery.
STRATA: Washed, earth-inspired colors with subtle surface variation and contrasting embroidery.
The choice between MX Signature and BX Armor comes down to how you want the fabric to look and feel.
The fit remains the same.
Fabric Composition
Main fabric: 100% Organic Cotton French Terry
Hood lining: Organic Cotton Single Jersey
Rib trims: 95% Organic Cotton / 5% Elastane
Main fabric weight: 420 GSM, excluding decoration and other garment components.
Garment Care
Machine wash cold, following the temperature and washing instructions on the garment care label.
Turn the hoodie inside out before washing.
Wash with similar colors. Wash dark colors separately.
Do not bleach.
Avoid tumble drying.
Gently reshape and line dry in the shade.
If ironing is permitted, use low heat on the reverse side and avoid direct contact with embroidery.
Gentle care helps preserve the washed color, natural cotton surface, and intended shape of the sweatshirt. Always follow the care instructions attached to the individual garment.
Worldwide Shipping
REALLY COOL® offers shipping to selected destinations worldwide.
Shipping methods, estimated delivery times, and applicable charges are displayed at checkout.
Orders are typically processed within 1–3 business days after confirmation.
Returns & Exchanges
Eligible return requests must be submitted within 16 days of delivery, unless otherwise required by applicable consumer protection laws.
Returned products must meet our stated return conditions, including being unworn, unused, unwashed, and returned with original tags attached.
Exchanges are subject to approval, product availability, and destination requirements.
For full details, please review:
Shipping & Delivery | Returns & Exchanges
