420 GSM Heavyweight Boxy Long-Sleeve Henley | STRATA BX Armor
420 GSM organic cotton single jersey. Architectural Boxy fit. Three-button Henley. Unbrushed face. Clean open cuffs.
A 420 GSM boxy long-sleeve Henley that keeps the natural texture of dense cotton in focus. STRATA BX Armor pairs an unbrushed organic cotton single-jersey face with clean, straight self-fabric cuffs and a reinforced three-button placket.
Burnt Umber brings warm, oxidized brown tones; Dark Earth offers a deeper brown expression. Both receive STRATA’s controlled washed finish and share the same Dark Espresso Brown buttons. Raised white tiger-head embroidery adds contrast at the left chest without covering the jersey in a large graphic.
Generous chest room, controlled dropped shoulders, and a straight, non-cropped body define the Architectural Boxy fit. The full-length sleeves end in clean open cuffs, with no ribbed wrist band or elastic. Mobilon shoulder reinforcement and dimensional stabilization support the intended proportions.
Wear the neckline buttoned for a clean finish or open for a more relaxed look. Paired with denim or straight-leg pants, BX brings substantial cotton texture to a contemporary essentials wardrobe.
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
Surface finish
Clean, unbrushed single jersey; no Triple Carbon Peach
Collection finish
Controlled STRATA wash with restrained tonal variation
Fit
Architectural Boxy; shared MX/BX Henley core measurements
Neckline and placket
Round Henley neckline; reinforced three-button placket with a rectangular box-X base
Buttons
Three functional Dark Espresso Brown buttons on both colorways
Sleeves
Full-length set-in sleeves with controlled dropped shoulders
Wrist finish
Clean, straight self-fabric open cuffs; no ribbed wrist band or elastic
Body hem
Straight, turned self-fabric finish; no ribbed waistband
Shoulder construction
Internal Mobilon reinforcement
Shape-setting process
Dedicated high-temperature dimensional stabilization
Seam construction
Three-needle, five-thread reinforcement at designated seams
Branding
Raised white tiger-head chest embroidery and woven side label
Colors and sizes
Burnt Umber / Dark Earth; XS–2XL; unisex
STRATA washing gives BX its color depth without adding the MX peached surface. Its placket has the same three functional buttons and rectangular box-X base reinforcement. The clean cuff finish is included in the total sleeve length, just as the ribbed cuff is included on MX.
MX Signature and BX Armor share the same Architectural Boxy Henley measurements: generous chest room, controlled dropped shoulders, and a straight, non-cropped body. They differ in both the fabric surface and the wrist finish: MX has ribbed cuffs; BX has clean self-fabric open cuffs.
Our size labels are intentionally generous. Start with the body-chest guide, then compare a Henley or similar long-sleeve top you own with the finished measurements below. At a boundary between sizes, use your preferred proportions and the garment chart rather than assuming a universal size conversion.
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 Long-Sleeve Henley Measurements
Size
Half chest
Body length
Shoulder width
Total sleeve length
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
The MX ribbed cuff is already included in the total sleeve length. Do not add cuff height to the figures above. BX includes its turned self-fabric finish in the same total sleeve measurement.
How to Measure
Measurement
How to measure
Body chest
Measure around the fullest part of your chest with the tape level and relaxed. This is a body circumference, not a flat garment width.
Half chest
Lay the garment flat and measure straight across between the underarm/side-seam intersections. Do not use an arbitrary below-armhole offset.
Body length
Measure from the high shoulder point at the neck attachment seam to the finished front bottom edge, excluding neck-band height.
Shoulder width
Measure straight across the back between the shoulder-to-sleeve seam points.
Total sleeve length
Measure along the upper sleeve from the shoulder-to-sleeve seam to the final edge. Include the entire MX ribbed cuff or BX turned finish. This is not a center-back-neck measurement.
Measure the garment dry and relaxed, without stretching it. Compare sleeve length as well as chest width, since shoulder placement and arm length affect where the cuff sits.
For additional guidance, see our Size & Fit Guide.
STRATA gives the same heavyweight jersey garments a different color expression. A controlled wash introduces subtle tonal depth rather than aggressive acid washing or heavy distressing.
Color
Appearance
Chest embroidery
Burnt Umber
Warm, oxidized orange-brown with restrained washed depth.
White contrast
Dark Earth
Deep brown with controlled tonal variation.
White contrast
Both colors feature raised white tiger-head embroidery on the left chest. The color name identifies the garment shade, not the embroidery color.
Both Burnt Umber and Dark Earth use three Dark Espresso Brown buttons in MX Signature and BX Armor. White contrast refers to the chest embroidery, not the buttons.
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.
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. Avoid pulling on the buttons or applying direct heat or pressure to the buttons and reinforced placket. Follow the attached care label for any additional handling instructions.
Two Henley series, one Architectural Boxy size chart. Both use 420 GSM organic cotton single jersey, a reinforced three-button placket, and full-length set-in sleeves. The differences are the fabric surface and the cuff construction.
Detail
MX Signature
BX Armor
Fabric face
Face-only Triple Carbon Peach; finely peached and matte
Clean, unbrushed single jersey
Wrist finish
Body-color ribbed cuffs
Clean, straight self-fabric open cuffs
Fit and core measurements
Architectural Boxy; shared Henley dimensions
Same nominal dimensions as MX
Neckline and placket
Round Henley neckline with three functional buttons
Same three-button Henley construction
Total sleeve length
Includes the complete ribbed cuff
Includes the turned self-fabric finish
Body hem
Straight self-fabric hem; no ribbed waistband
Same as MX
Choose it for
A softer outer face and a defined ribbed wrist finish
Visible jersey texture and clean open sleeve ends
MX does not have a longer finished sleeve simply because it has a ribbed cuff. Choose the surface and wrist finish you prefer; the core size chart stays the same.
Question
Answer
Is the BX face brushed because the color is washed?
No. STRATA washing creates the controlled tonal color effect. BX keeps the jersey face unbrushed and does not receive Triple Carbon Peach.
What does clean cuff mean on BX?
The sleeve ends in a straight, turned self-fabric opening. There is no separate ribbed wrist cuff or elastic band.
Does BX use a different size chart from MX?
No. Both share the same nominal chest, body length, shoulder width, and total sleeve length. Their wrist construction is different, so choose by the surface and cuff finish you prefer.
Do the buttons change between Burnt Umber and Dark Earth?
No. Both colors use three Dark Espresso Brown buttons and raised white contrast embroidery. The garment color changes; the button color does not.
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.
