SIGNAL EX Essential - 420 GSM Oversized T-Shirt with Ribbed Hem

Name: SIGNAL EX Essential - 420 GSM Oversized T-Shirt with Ribbed Hem
Brand: REALLY COOL®
Price: 149 USD
Availability: InStock

US$149.00

Color

Size

Quantity

Refined Proportions. Defined by Contrast.

Ease, with one considered detail. SIGNAL EX Essential is a 420 GSM oversized T-shirt with ribbed hem, designed to balance relaxed volume with considered detailing.

Crafted from 100% organic cotton high-density single jersey, EX Essential maintains the natural, unbrushed character of heavyweight cotton while introducing a refined 2.5 cm ribbed-knit hem.

The result is a substantial, full-length silhouette with a subtle finishing detail that sets it apart from a conventional oversized T-shirt.

Relaxed by Design. Refined in Construction.

EX Essential shares its Oversized Relaxed pattern foundation with WX Core, featuring a wider chest, more generously dropped shoulders, longer sleeves, and a full-length body.

Its defining distinction is the refined ribbed hem: a carefully proportioned 2.5 cm knit band designed to finish the silhouette without the gathered effect of a sweatshirt waistband.

The natural, unbrushed 420 GSM jersey provides material weight and a clean cotton surface, allowing the proportions and hem construction to take visual priority.

SIGNAL Collection. Defined by Contrast.

Our signature raised tiger-head embroidery creates a graphic contrast across two colorways:

Black Garment / White 3D Embroidery
White Garment / Black 3D Embroidery

Recognition through contrast. Identity without excess.

420 GSM Organic Cotton Jersey.
Oversized Relaxed Fit.
2.5 cm Refined Ribbed Hem.
Natural Unbrushed Surface.
Contrast 3D Embroidery.

An everyday heavyweight essential, refined through proportion and detail.

420 GSM. Substantial by Nature. Refined by Design.

EX Essential is crafted from our signature 420 GSM high-density organic cotton single jersey.

The substantial fabric weight provides natural body and opacity, creating a foundation for its full-length Oversized Relaxed silhouette.

Specification	Details
Composition	100% Organic Cotton
Fabric Weight	420 GSM
Construction	High-Density Single Jersey
Yarn Configuration	16s/1 and 21s/2
Base Processing	GOTS Integrity Wash
Surface	Natural Unbrushed Jersey
Fit	Oversized Relaxed
Body Length	Full-Length, Non-Cropped
Hem	2.5 cm Refined Ribbed-Knit
Embroidery	Contrast 3D Tiger-Head Embroidery
Gender	Unisex

EX Essential - The Refined Expression

EX Essential explores how a subtle finishing detail can transform the character of a heavyweight oversized T-shirt.
Built on our 420 GSM organic cotton jersey platform, it pairs relaxed proportions with an intentionally refined ribbed-knit hem.

Natural Unbrushed Jersey

The dense 420 GSM single jersey retains its original cotton surface without Triple Carbon Peach mechanical brushing.
The visible knit structure creates a clean, substantial material expression.

Oversized Relaxed Fit

A wider chest, more generously dropped shoulders, longer sleeves, and a full-length body establish a relaxed silhouette.
The proportions are designed to fall naturally without excessive gathering or unnecessary stiffness.

2.5 cm Refined Ribbed Hem

The defining construction detail of EX Essential.
A carefully proportioned 2.5 cm ribbed-knit hem introduces a subtle, visible finishing element at the bottom of the garment.
Unlike a conventional sweatshirt waistband, the ribbed hem is not intended to pull the garment inward or create a gathered waist.
It preserves the relaxed silhouette while adding a refined structural accent.

Clean, Considered Construction

A traditional crew neckline, natural shoulder drape, and balanced sleeve proportions maintain the simplicity of the oversized shape.
The unbrushed jersey allows the fabric's natural texture and weight to remain central to the design.

SIGNAL Contrast 3D Embroidery
Our signature tiger-head emblem is applied in raised contrast embroidery.
Black garments feature White Embroidery.
White garments feature Black Embroidery.

The dimensional stitching gives SIGNAL its recognizable visual identity without overwhelming the garment's clean proportions.

A Detail That Defines the Difference.

EX Essential and WX Core share the same Oversized Relaxed pattern foundation.
Their distinction lies in the finish.

Where WX Core uses a standard folded jersey hem, EX Essential introduces a refined 2.5 cm ribbed-knit hem.

Our 420 GSM organic cotton jersey has been evaluated through laboratory testing for dimensional stability, fabric strength, pilling resistance, and color fastness.

Performance Metric	Verified Result
Extended Wash Testing	50 consecutive wash-and-dry cycles
Length Dimensional Change	Approximately -0.9%
Width Dimensional Change	Approximately -1.1%
Dimensional Testing Standard	ISO 6330
Care-Label Shrinkage Specification	≤ 3.0% (AATCC 135 / ISO 6330)
Bursting Strength	1,143 kPa
Pilling Resistance	Grade 4–5 (care-label rating: 4.5)
Pilling Test Standards	ASTM D3512 / ISO 12945-2
Color Fastness	Laboratory verified
Color Fastness Standards	AATCC 8 / ISO 105-X12

Built Around Measurable Standards

Beyond its substantial 420 GSM fabric weight, our organic cotton jersey is evaluated for dimensional stability, fabric strength and surface appearance.

Results reflect laboratory-tested samples and their specified testing conditions.

Actual garment performance may vary with wear, laundering, and care practices.

Full-Length Oversized Relaxed Fit - EX Essential / WX Core

Designed for a longer, roomier silhouette with dropped shoulders, extended sleeves, and a natural, relaxed drape.
EX Essential and WX Core share the same Oversized Relaxed base pattern and finished garment proportions.
EX Essential introduces a refined 2.5 cm ribbed hem, while WX Core features a clean, approximately 1.5 cm double-needle stitched hem.

Both maintain a deliberately oversized, full-length silhouette without a cropped proportion.

Size Reference

Our sizing is intentionally generous. Size M is developed around wearers who typically choose men's XL in many US or European brands, with additional volume and length built into the Oversized Relaxed pattern.
Because this fit is roomier than our Architectural Boxy series, we recommend comparing the finished measurements rather than relying on conventional size labels.

Unisex Size Guide - Recommended Body Chest

Size
Chest (cm)
Chest (in)
XS
92–102
Approx. 36–40"
S
102–112
Approx. 40–44"
M
112–122
Approx. 44–48"
L
122–132
Approx. 48–52"
XL
132–142
Approx. 52–56"
2XL
142–152
Approx. 56–60"

Finished Garment Measurements (cm)

Size
Half Chest
Length
Shoulder
Sleeve
XS
63
74
55
23.5
S
68
76
57
24.5
M
73
78
59
25.5
L
78
80
61
26.5
XL
83
82
63
27.5
2XL
88
84
65
28.5

How to Measure

Measure around the fullest part of your chest with the measuring tape level and relaxed.
For the most accurate fit comparison, measure a T-shirt you already own and compare the chest width, body length, shoulder width, and sleeve length with our finished garment measurements.

Understanding Our Fits

MX Signature / BX Armor - Architectural Boxy: A more compact full-length proportion with structured chest volume, controlled dropped shoulders, and wide straight sleeves.
WX Core / EX Essential - Oversized Relaxed: A longer, wider silhouette with extended sleeves, relaxed shoulders, and naturally flowing volume.

Both pattern blocks are intentionally generous and designed as unisex garments.
The difference is in proportion, structure, and drape, not simply a larger size.
Fabric Composition

100% Organic Cotton
420 GSM High-Density Single Jersey
Exclusive of Decoration

Garment Care

Machine wash cold (maximum 30°C).
Do not bleach.
Iron on the reverse side only.
Do not tumble dry.
Line dry in the shade.

Follow the care instructions to help maintain the garment's appearance, surface finish, and shape over time.

Tested Fabric Performance

Shrinkage specification: ≤3.0% (AATCC 135 / ISO 6330).
Pilling resistance: Grade 4.5 (ASTM D3512 / ISO 12945-2).
Color fastness: Laboratory verified (AATCC 8 / ISO 105-X12).

Shared Foundation. Distinct Craftsmanship. Intentional Expression.

Every REALLY COOL® T-shirt begins with a shared 420 GSM organic cotton jersey platform.

Each series develops that foundation through a different combination of fit, surface finishing, and construction.

Series	Fit	Distinctive Detail
MX Signature	Architectural Boxy	Triple Carbon Peach finish with reinforced construction
BX Armor	Architectural Boxy	Clean unbrushed jersey with reinforced construction
EX Essential	Oversized Relaxed	Refined 2.5 cm ribbed hem
WX Core	Oversized Relaxed	Standard clean folded hem

MX Signature - The Tactile Expression

A structured silhouette combined with our exclusive three-stage mechanical brushing finish.

BX Armor - The Structured Expression

The same Architectural Boxy foundation with a clean, unbrushed surface and reinforced construction.

EX Essential - The Refined Expression

A full-length relaxed silhouette distinguished by a refined ribbed hem.

WX Core - The Relaxed Expression

A full-length oversized silhouette with a standard clean hem and simplified construction.

***All STRATA collections receive an additional controlled washed finish in their respective earth-inspired colorways.

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

SIGNAL EX Essential - 420 GSM Oversized T-Shirt with Ribbed Hem

Fabric & Materials

Signature Finishing & Construction

Lab-Verified Performance

Fit & Size Guide - EX/WX Oversized Relaxed

Care Instructions

Explore the Four Series

Shipping & Returns

Size	Chest (cm)	Chest (in)
XS	92–102	Approx. 36–40"
S	102–112	Approx. 40–44"
M	112–122	Approx. 44–48"
L	122–132	Approx. 48–52"
XL	132–142	Approx. 52–56"
2XL	142–152	Approx. 56–60"

Size	Half Chest	Length	Shoulder	Sleeve
XS	63	74	55	23.5
S	68	76	57	24.5
M	73	78	59	25.5
L	78	80	61	26.5
XL	83	82	63	27.5
2XL	88	84	65	28.5