420 GSM Heavyweight French Terry Straight-Leg Sweatpants | VOID BX Armor
420 GSM organic cotton French terry. Relaxed straight leg. Open hems. Internal drawcord. Clean unbrushed face.
Heavyweight straight-leg sweatpants that keep the natural definition of dense cotton in view. VOID BX Armor uses 420 GSM organic cotton three-end French terry with a compact, unbrushed face and visible unbrushed loops inside. There is no peached finish, brushed fleece, or added leg lining.
The fit leaves room through the seat and upper thigh, then follows a clean line through the knee to a full-length open hem. It is relaxed without becoming wide-leg, and the ankle stays open rather than gathering into a cuff.
A main-fabric casing encloses the elastic waistband, with a cotton drawcord that adjusts from the inside. Two slanted front pockets use lighter organic cotton jersey bags, while a single patch pocket sits at the right rear. Reinforced pocket entries and a turned, double-row hem finish the construction.
Solid black with black embroidery or white with white embroidery keeps the focus on texture and proportion. Wear BX with a crewneck or an open shirt as part of a contemporary essentials wardrobe.
Detail
Specification
Product family
420 GSM Signature Loopback Jersey
Main fabric
100% organic cotton, three-end French terry
Main fabric weight
420 GSM, 420 grams per square meter
Outer surface
Clean, compact, unbrushed French terry face; no Triple Carbon Peach
Interior
Unbrushed integral loopback; no brushed fleece or added leg lining
Fit and length
Relaxed straight leg; regular, full-length proportion
Waistband
4.5 cm main-fabric casing with fully enclosed elastic; no exposed rib
Elastic
3.8 cm enclosed anti-roll elastic
Drawcord
Internal 6 mm round cotton cord with soft tonal ends; no external eyelets or metal tips
Front pockets
Two slanted hand pockets with reinforced entry ends
Front pocket bags
Tonal organic cotton single jersey, 220 GSM
Back pocket
One patch pocket on the wearer’s right rear
Leg openings
Open hems; no ankle rib, elastic, or drawcord
Hem construction
3 cm turned self-fabric hem with two-needle coverstitch
Branding
Raised tonal tiger-head embroidery and woven side label
Colors and sizes
Black / White; XS–2XL; unisex
BX preserves the unbrushed face and integral loopback reverse of the same French Terry fabric. The front pocket bags are a separate, lighter single jersey; they do not change the main-shell construction.
MX Signature and BX Armor share a dedicated relaxed straight-leg sweatpants pattern. The fit gives the seat and upper thigh controlled room, then continues through a balanced knee to an open hem. It is designed to fall over footwear with little break, not a tight ankle, flared opening, or intentionally stacked leg.
Choose your bottom size independently from your T-shirt, sweatshirt, or hoodie size. Measure your natural waist and full hip, then compare the garment dimensions and length with sweatpants you own. Check both body measurements rather than choosing by waist alone.
Recommended Body Waist & Hip
Size
Natural waist
Full hip
XS
71–74 / 28.0–29.1
82–85 / 32.3–33.5
S
75–80 / 29.5–31.5
86–91 / 33.9–35.8
M
81–88 / 31.9–34.6
92–99 / 36.2–39.0
L
89–96 / 35.0–37.8
100–107 / 39.4–42.1
XL
97–106 / 38.2–41.7
108–116 / 42.5–45.7
2XL
107–119 / 42.1–46.9
117–125 / 46.1–49.2
Finished Measurements - Waist, Seat & Upper Leg
The waistband is measured relaxed, with the drawcord loose. These are finished garment measurements before home laundering.
Size
Relaxed half waist
Half hip
Front rise
Back rise
Half thigh
XS
33 / 12.99
49 / 19.29
30 / 11.81
40 / 15.75
30 / 11.81
S
35 / 13.78
52 / 20.47
31 / 12.20
41 / 16.14
31.5 / 12.40
M
37 / 14.57
55 / 21.65
32 / 12.60
42 / 16.54
33 / 12.99
L
40 / 15.75
59 / 23.23
33 / 12.99
43.5 / 17.13
35 / 13.78
XL
44 / 17.32
63.5 / 25.00
34 / 13.39
45 / 17.72
37.5 / 14.76
2XL
49 / 19.29
68.5 / 26.97
35.5 / 13.98
47 / 18.50
40 / 15.75
Finished Measurements - Lower Leg & Length
Size
Half knee
Half leg opening
Inseam
Outseam
XS
23 / 9.06
21 / 8.27
75 / 29.53
103 / 40.55
S
24 / 9.45
22 / 8.66
75.5 / 29.72
104.5 / 41.14
M
25 / 9.84
23 / 9.06
76 / 29.92
106 / 41.73
L
26.5 / 10.43
24 / 9.45
76.5 / 30.12
107.5 / 42.32
XL
28 / 11.02
25 / 9.84
77 / 30.31
109 / 42.91
2XL
29.5 / 11.61
26 / 10.24
77 / 30.31
110 / 43.31
Front rise, back rise, and outseam include the finished 4.5 cm waistband. The 3 cm hem turnback is already included in the finished leg lengths. XL and 2XL share the same 77 cm inseam; the other dimensions still increase. Outseam is measured directly, not calculated by adding rise to inseam.
The relaxed half waist is measured across an elastic opening at rest; doubling it does not give your recommended body waist. The waistband stretches, and the internal drawcord adjusts the fit. Use the body-waist and hip guide for size selection rather than treating a stretched waistband opening as a body-size recommendation.
For additional guidance, see our Size & Fit Guide.
VOID pairs solid black or white straight-leg sweatpants with raised tiger-head embroidery in the same color. The logo is defined by thread relief and changing light rather than contrasting thread.
Color option
Body color
Embroidery
Black-on-Black
Solid black
Raised black tonal tiger-head embroidery
White-on-White
Solid white
Raised white tonal tiger-head embroidery
Both MX Signature and BX Armor use these tonal pairings. MX has a peached outer face; BX keeps its face unbrushed. Both retain the same unbrushed loopback interior.
Our straight-leg sweatpants quality standard applies to the finished French terry and the assembled garment, including the pocket bags, enclosed elastic, internal drawcord, seams, and embroidery.
The following are acceptance requirements, not individual measured results for every color, size, or production lot.
Property
Required standard
Method or assessment
Finished main-fabric weight
420 GSM ±5% — 399–441 g/m²
ASTM D3776/D3776M
Finished pocket-bag fabric weight
220 GSM ±5% — 209–231 g/m²
ASTM D3776/D3776M; pocketing assessed separately
Care dimensional change
No more than 3% absolute change in each designated main-body dimension after three complete 30°C wash-and-dry cycles
ISO 3759, ISO 6330, and ISO 5077; product-specific care procedure
Waistband recovery
No more than 1 cm growth in relaxed half-waist width after 10 controlled extension cycles and 30 minutes of rest
REALLY COOL RC-WAIST-01; 5-second hold and 5-second release per cycle
Leg-length symmetry
No more than 0.7 cm left-to-right difference on matching inseam and outseam paths
Finished and post-care garment measurement
Loaded-pocket function
One front pocket with a 250 g phone dummy and the other with a 150 g wallet dummy; secure pockets and seams without bag exposure or unacceptable distortion
REALLY COOL RC-WEAR-01: 20 minutes sitting, 10 minutes walking, 10 squats, and additional movement checks
Garment integrity and appearance
Secure functional seams and pocket attachments, flat hems, balanced legs, stable embroidery, and retained MX/BX surface character
Inspection before and after the specified care and functional assessments
Waistband opening and recovery are assessed separately from main-body dimensional change. The loaded-pocket assessment is a controlled wear check, not a published maximum carrying capacity. The finished garment is also assessed for waist support, seat coverage, crotch strain, and movement during sitting, walking, squatting, and stepping.
Care step
Instruction
Wash
Wash inside out at a maximum of 30°C / 86°F with similar colors. Keep dark and white garments in separate loads.
Dry, bleach, iron, and dry-clean
Follow the instructions and symbols on the care label attached to your sweatpants.
Protect the shape and finish
Avoid handling that stretches or distorts the waistband, straight leg, or open hem, or flattens the raised embroidery.
The attached care label governs the complete garment, including the French terry, lighter pocket bags, elastic, drawcord, and embroidery. The three-cycle quality assessment is a verification procedure, not a home-care schedule.
Two surface finishes, one relaxed straight-leg fit. Both series use 420 GSM organic cotton three-end French terry, with an integral unbrushed loopback reverse.
Detail
MX Signature
BX Armor
Outer face
Face-only Triple Carbon Peach; finely peached and matte
Clean, compact, unbrushed cotton face
Interior
Unbrushed knitted loops
The same unbrushed loopback construction
Fit and measurements
Relaxed straight leg; dedicated bottoms size chart
The same finished measurements
Waistband
Main-fabric casing, enclosed elastic, and internal cotton drawcord
The same concealed waist system
Pockets
Two slanted front pockets and one wearer-right rear patch pocket
The same three-pocket arrangement
Hems
Open, turned self-fabric hems; no ribbed or elasticated ankle cuffs
The same open-hem construction
Choose it for
A softer, peached outer surface
The natural definition of unbrushed jersey-knit cotton
Choose the surface you prefer, not a different size or leg shape. Straight-leg does not mean the flat thigh, knee, and opening widths are identical: the graded dimensions create the intended straight visual line without a gathered ankle.
Question
Answer
Is the BX fabric brushed or peached?
No. BX Armor retains an unbrushed French terry face and unbrushed reverse loops. Triple Carbon Peach is the MX Signature surface treatment.
Does BX have a different leg shape from MX?
No. Both use the same relaxed straight-leg pattern and finished size chart. The waist, seat, thigh, knee, leg opening, and lengths stay the same; the outer surface changes.
How many pockets are there?
Three: two slanted front pockets and one patch pocket on the wearer’s right rear. The front pockets have lighter organic cotton single-jersey bags.
Why is the relaxed waist smaller than the recommended body waist?
The flat garment chart measures the elastic waistband at rest. The body guide measures your natural waist circumference. They are different measurements; use the body-waist and hip ranges together, then compare the garment dimensions and preferred fit.
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.
