SIGNAL BX Armor - 420 GSM Heavyweight Boxy Long-Sleeve Henley
The SIGNAL BX Armor heavyweight boxy long-sleeve Henley brings a fresh perspective to a familiar wardrobe essential.
Made from substantial 420 GSM organic cotton single jersey, it retains the fabric's natural, unbrushed surface for a clean, smooth finish and an authentic cotton feel.
Cut in our Architectural Boxy Fit, the Henley offers generous room through the chest, relaxed shoulders and a straight, full-length body. A three-button neckline adds versatility, while standard open cuffs give the sleeves a relaxed, natural finish without the close fit of ribbed cuffs.
The SIGNAL identity comes through in contrast 3D tiger-head embroidery, white on black or black on white. Dark Espresso Brown buttons complement the black colorway, while Warm Ivory Cream buttons complete the white version.
Wear it on its own with denim or trousers, or layer it beneath a jacket. With its substantial cotton, familiar Henley neckline and easy boxy fit, the SIGNAL BX Armor is designed for everyday wear across seasons.
420 GSM Organic Cotton Jersey
Unbrushed Jersey Surface
Architectural Boxy Fit
Three-Button Henley Neckline
Standard Open Cuffs
Contrast 3D Tiger-Head Embroidery
Substantial cotton.
An easy fit.
A distinctive identity.
An everyday Henley with a confident, understated shape and the unmistakable contrast of SIGNAL.
Feature
Details
Material Composition
100% Organic Cotton, exclusive of decoration
Organic Textile Program
GOTS-certified organic cotton jersey program
Fabric Weight
420 GSM Heavyweight Jersey
Knit Construction
High-Density Single Jersey
Yarn Configuration
16s/1 and 21s/2 Yarn System
Surface Finish
Unbrushed 420 GSM Organic Cotton Jersey
Collection Treatment
Standard Base Finish
Silhouette / Fit
Architectural Boxy
Sleeve Construction
Full-Length Set-In Sleeves
Sleeve Openings
Standard Open Cuff, Non-Ribbed
Body Hem
Standard Straight Hem, Non-Ribbed
Neckline
Reinforced Round Henley Neckline
Button Placket
Three Functional Buttons
Button Color
Dark Espresso Brown (Black) / Warm Ivory Cream (White)
Shoulder Construction
Mobilon-Reinforced Shoulder Seams
Dimensional Processing
High-Temperature Dimensional Stabilization
Stitch Construction
Three-Needle, Five-Thread Reinforcement at Specified Seams
Branding
Raised White 3D Tiger-Head Embroidery
Colorways
Black / White
Gender
Unisex
Available Sizes
XS / S / M / L / XL / 2XL
The Three-Button Henley - A Familiar Detail, Refined
The three-button neckline offers a simple way to change the feel of the garment, worn fully buttoned or slightly open.
Dark Espresso Brown buttons complement the black jersey, while Warm Ivory Cream buttons create a softer, coordinated finish on white.
Unbrushed Jersey - Cotton in Its Natural Form
BX Armor celebrates the natural character of heavyweight cotton jersey.
Made from 420 GSM organic cotton, the fabric retains its original unbrushed surface, allowing the knit's smooth texture and substantial feel to come through.
Without an additional peach-brushed finish, the surface has a clean, familiar cotton feel that works naturally with the Henley's relaxed shape.
SIGNAL - Contrast as Identity
SIGNAL brings a more visible expression of the REALLY COOL® identity to our heavyweight essentials.
On the black Henley, raised white tiger-head embroidery stands out against the deep cotton surface.
On the white version, black embroidery creates the reverse effect, a distinctive detail that feels graphic without overwhelming the garment.
The contrast is intentional. It gives each colorway a recognizable character while allowing the familiar Henley neckline, substantial jersey and relaxed fit to remain the focus.
Two classic colors. One clear identity.
Architectural Boxy Fit - Room Without Excess Length
A roomy chest, relaxed shoulders and straight sides give the Henley its distinctive boxy shape.
The body remains full-length rather than cropped, making it easy to wear untucked or beneath outerwear. Reinforced shoulder seams help support the intended shape through everyday wear.
Standard Open Cuffs - A Relaxed Sleeve Finish
BX Armor features standard open sleeve endings.
The clean, stitched finish allows the sleeves to fall naturally toward the wrists, maintaining the relaxed shape of the Architectural Boxy Fit.
The result is an easy, understated long-sleeve Henley that feels comfortable worn on its own or under outerwear.
With its substantial unbrushed cotton, relaxed boxy shape and distinctive contrast embroidery, the SIGNAL BX Armor Henley offers a straightforward expression of contemporary everyday dressing.
A familiar essential, shaped by the details that matter.
Our 420 GSM organic cotton single jersey foundation has been evaluated through laboratory testing for dimensional stability, fabric strength, pilling resistance and colorfastness.
Performance Metric
Reported Result / Standard
Extended Wash Testing
50 wash-and-dry cycles under documented test conditions
Length Dimensional Change
Approximately −0.9%
Width Dimensional Change
Approximately −1.1%
Dimensional Test Reference
ISO 6330
Care-Label Shrinkage Specification
≤3.0% — specified acceptance limit
Bursting Strength
1,143 kPa
Bursting Test Standard
ISO 13938-1
Pilling Resistance
Grade 4–5
Pilling Test Reference
ISO 12945-2
Colorfastness
Laboratory evaluated under applicable test conditions
Colorfastness References
AATCC 8 / ISO 105-X12
Built Around Measurable Standards
Fabric weight establishes the foundation, but performance depends on more than weight alone. We evaluate our organic cotton jersey for how it responds to washing, physical stress and everyday surface wear.
These results refer to the laboratory-tested jersey samples under the documented conditions. They are shared material references, not separate finished-garment test guarantees for every STRATA colorway, brushing treatment or long-sleeve size.
For a deeper look at our materials and testing approach, explore The Tactile Paradox.
Architectural Boxy Fit - Structured, Not Cropped
The STRATA MX Signature Henley follows our established MX/BX Architectural Boxy pattern, with generous chest room, relaxed shoulder placement and a straight, full-length body.
The reinforced three-button neckline allows for different ways of wearing the Henley, while the full-length sleeves finish with comfortable ribbed cuffs.
Our sizing is intentionally generous. Size M is developed around a wearer with a body chest of approximately 112–122 cm (44–48 in), including customers who commonly wear men's XL in many US or European brands.
This is a fit reference, not a universal size conversion. We recommend comparing the finished garment measurements with a piece you already own and enjoy wearing.
Finished Garment Measurements (cm / inch)
Size
Half Chest
Body Length
Shoulder
Sleeve
XS
58 / 22.83
70 / 27.56
53 / 20.87
57 / 22.44
S
63 / 24.80
72 / 28.35
55 / 21.65
58 / 22.83
M
68 / 26.77
74 / 29.13
57 / 22.44
59 / 23.23
L
73 / 28.74
76 / 29.92
59 / 23.23
60 / 23.62
XL
78 / 30.71
78 / 30.71
61 / 24.02
61 / 24.02
2XL
83 / 32.68
80 / 31.50
63 / 24.80
62 / 24.41
For long-sleeve garments, arm length and preferred wrist coverage are especially important. Compare these measurements with a garment you already own and enjoy wearing.
See our Size & Fit Guide for more information.
Our 420 GSM heavyweight long-sleeve Henleys are available in two series: MX Signature and BX Armor.
Both share the same organic cotton jersey foundation, Architectural Boxy Fit and reinforced three-button neckline. The difference is in how the fabric feels and how the sleeves are finished.
Series
Fabric Surface
Sleeve Finish
MX Signature
Softly brushed Triple Carbon Peach
Ribbed Wrist Cuffs
BX Armor
Clean, Unbrushed Jersey
Standard Open Cuffs
MX Signature - The Tactile Expression
A softly brushed, suede-like cotton surface with ribbed cuffs for a more defined sleeve finish.
BX Armor - The Structured Jersey Expression
An unbrushed heavyweight cotton surface with straight, open sleeve endings for a simpler, more relaxed look.
Both series are available in SIGNAL, VOID and STRATA.
SIGNAL: Black and white with contrast embroidery.
VOID: Black and white with matching tonal embroidery.
STRATA: Washed Dark Earth and Burnt Umber with white contrast embroidery.
Choose MX Signature for its softly brushed feel and ribbed cuffs, or BX Armor for its original jersey texture and clean open sleeves.
Both deliver the same Architectural Boxy Fit and the versatility of a three-button Henley.
Fabric Composition
100% Organic Cotton
420 GSM High-Density Single Jersey
Exclusive of Decoration
Garment Care
Machine wash cold (maximum 30°C).
Turn the garment inside out before washing.
Wash with similar colors; wash dark colors separately.
Do not bleach.
Do not tumble dry.
Reshape gently and line dry in the shade.
If ironing is permitted by the care label, use low heat on the reverse side and avoid direct contact with the embroidery.
Handle the button placket gently during washing and ironing. Avoid excessive pulling on the buttons or applying direct heat to the embroidery and button details.
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
