VOID BX Armor - 420 GSM Tonal Structured Boxy T-Shirt
Structure Without Excess.
Quiet shape, definite presence. VOID BX Armor is a tonal structured boxy T-shirt built around dense 420 GSM organic cotton, an unbrushed surface and a carefully balanced, compact silhouette.
BX Armor preserves the fabric's original unbrushed surface, revealing a clean, compact knit with substantial body and a natural cotton finish.
The Architectural Boxy silhouette combines a generous chest, controlled dropped shoulders, wide sleeves, and a shorter, non-cropped body length. The result is a structured outline designed to feel substantial without unnecessary bulk.
Mobilon shoulder reinforcement, high-temperature shape stabilization, and reinforced stitching help support the garment's intended proportions through everyday wear.
Within the VOID Collection, our signature raised tiger-head embroidery adopts a tonal expression: black on black or white on white. The detail remains dimensional while allowing the silhouette and material to take precedence.
420 GSM Organic Cotton Jersey.
Unbrushed Surface.
Architectural Boxy Fit.
Reinforced Construction.
Tonal 3D Embroidery.
A quieter interpretation of structural design, built around material integrity and purposeful restraint.
Specification
Details
Material Composition
100% Organic Cotton
Fabric Weight
420 GSM Heavyweight Jersey
Knit Structure
High-Density Single Jersey
Yarn Configuration
16s/1 and 21s/2
Surface Treatment
Unbrushed Natural Jersey Surface
Material Character
Dense, compact knit with a natural cotton finish
Core Fabric Processing
GOTS Integrity Wash
Fit
Architectural Boxy
Shoulder Support
Mobilon Anti-Stretch Reinforcement
Shape Stabilization
High-Temperature Setting Process
Reinforced Construction
3-Needle, 5-Thread Reinforcement
Neckline
Reinforced Ribbed Crewneck
Hem Construction
Standard Folded and Double-Stitched Hem
Branding
Tonal Raised 3D Tiger-Head Embroidery
Colorways
Black-on-Black / White-on-White
Gender
Unisex
BX Armor - The Structured Expression
BX Armor represents the structural interpretation of our 420 GSM organic cotton jersey platform.
Unlike MX Signature, which introduces an exclusive Triple Carbon Peach brushing process, BX Armor preserves the original unbrushed jersey surface.
The fabric retains its compact knit definition and natural cotton character, allowing material density, construction, and proportion to become the primary expressions of the garment.
Architectural Boxy - Controlled Volume
BX Armor shares the Architectural Boxy pattern block with MX Signature.
Its silhouette combines a generous chest, controlled dropped shoulders, substantial sleeves, and a shorter, non-cropped body length.
The emphasis is on balanced proportions rather than exaggerated length or unnecessary volume.
Mobilon Shoulder Reinforcement
Mobilon anti-stretch reinforcement is incorporated into the shoulder construction to help control stretching and support the intended shoulder line.
High-Temperature Shape Stabilization
BX Armor incorporates high-temperature shape stabilization as part of its structural finishing process.
This step is designed to support dimensional consistency and preserve the garment's intended proportions.
Reinforced Neckline & Construction
The reinforced ribbed neckline and selected 3-needle, 5-thread stitching details support the garment's structural design.
The standard folded hem is finished with visible double stitching, without an added ribbed waistband.
VOID Tonal Embroidery
In the VOID Collection, our signature raised tiger-head embroidery is deliberately understated.
Black-on-Black: Black embroidery on black jersey.
White-on-White: White embroidery on white jersey.
The tonal treatment reduces visual contrast while retaining the dimensional character of the embroidery.
Luxury through Restraint.
A structured essential in which material, silhouette, and construction carry the expression.
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.
Architectural Boxy Fit - MX Signature / BX Armor
Designed for a compact, structured silhouette with generous chest volume, controlled dropped shoulders, wide straight sleeves, and a shorter, full-length body.
MX Signature and BX Armor share the same Architectural Boxy pattern. Both are intentionally oversized in their size designation, with a refined, structured shape rather than excessive length or loose, flowing fabric.
Size Reference
Our size M is developed around the body proportions of a wearer who typically chooses men's XL in many US or European brands, while delivering our intended Architectural Boxy silhouette.
International sizing varies by brand. Always compare your body measurements and the finished garment specifications before choosing your size.
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
58
70
53
21
S
63
72
55
22
M
68
74
57
23
L
73
76
59
24
XL
78
78
61
25
2XL
83
80
63
26
How to Measure
Measure around the fullest part of your chest, keeping the measuring tape level and relaxed.
For the most reliable comparison, lay a T-shirt you already own flat and compare its chest width, body length, shoulder width, and sleeve length with our finished garment measurements
Understanding Our Fits: MX / BX versus WX / EX
MX Signature & BX Armor - (Architectural Boxy )
More compact body proportion
Generous but controlled chest volume
Controlled dropped shoulders
Wide, structured sleeves
Shorter, non-cropped body length
EX Essential & WX Core - (Oversized Relaxed)
Longer, full-length silhouette
Roomier chest
More relaxed shoulder drop
Extended sleeves
Natural, relaxed drape
MX/BX and WX/EX use different pattern blocks and have separate size specifications. A size M in one fit should not be assumed to have identical garment measurements in the other.
All four series are designed as unisex garments.
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
