VOID BX Armor - 420 GSM Heavyweight Straight-Leg Sweatpants

Material Note:

The main fabric is 100% organic cotton French terry. The pocket bags use a separate, lighter organic cotton single jersey for comfort and reduced bulk.

The waistband contains elastic and a cotton drawcord. Fabric composition refers to the main shell rather than every component of the finished garment.

• 420 GSM French Terry - Weight With Purpose

Our 420 GSM organic cotton French terry gives these straight-leg sweatpants their substantial feel and clean appearance.

The fabric combines a dense, jersey-like outer face with natural, unbrushed cotton loops on the inside. Unlike traditional brushed fleece, the loopback reverse retains its knitted texture.

The result is a heavyweight cotton fabric designed to feel comfortable while giving the relaxed silhouette a more defined shape.

• Clean Unbrushed Face - The BX Armor Character

BX Armor preserves the clean, natural character of the French terry knit.

Without the Triple Carbon Peach finish used in MX Signature, the outer face retains its direct cotton texture and dense, understated appearance.

The interior remains naturally unbrushed, with visible cotton loops that distinguish French terry from traditional brushed fleece.

The result is a straightforward expression of our 420 GSM fabric, substantial in feel, clean in appearance and designed around the shape of the garment.

• VOID Tonal - An Exercise in Restraint

VOID explores understated color and tonal detail.

Black pairs a deep black surface with black raised embroidery. White takes the same approach with white-on-white detailing.

Both colorways focus on the relationship between texture, material and silhouette, without intentional fading or washed color effects.

• Relaxed Straight-Leg Fit - A Cleaner Line

Designed with room through the seat and thighs, the straight-leg silhouette follows a clean line from the knee to the open hem.

The full-length leg is shaped to fall naturally over footwear, without a tightened ankle cuff or excessive volume.

It is relaxed without becoming a wide-leg fit, offering a balanced proportion that works with both oversized tops and more structured layers.

• Everyday Construction - Details That Matter

A gathered elastic waistband provides a flexible fit, with an internal cotton drawcord for adjustment without visible hanging cords.

Two slanted front pockets offer easy access, while a single rear patch pocket keeps the back clean and functional.

A neatly turned open hem completes the straight-leg shape. Tonal raised tiger-head embroidery and the signature REALLY COOL® side label add restrained branding.

Our 420 GSM heavyweight straight-leg sweatpants are developed around confirmed quality standards covering fabric weight, wash performance, waistband recovery and everyday wear.

The focus goes beyond fabric weight alone. We also assess how the finished garment holds its shape, how the elastic waistband responds to repeated movement and how the pockets and seams perform during wear.

A substantial fabric is only the beginning.

The waistband is assessed for support and recovery, the pockets for everyday use, and the leg seams for a balanced appearance after movement and washing.

These are the confirmed performance and acceptance standards for this product. They define the quality requirements rather than reporting individual numerical readings for every finished garment.

We also assess zipper movement and front alignment, helping the hoodie maintain a balanced appearance whether worn closed or open.

For more on our approach to material quality, explore The Tactile Paradox.

• Relaxed Straight-Leg Fit

The REALLY COOL® MX Signature and BX Armor straight-leg sweatpants share the same dedicated bottoms pattern, developed for the weight and natural drape of our 420 GSM organic cotton French terry.

The fit offers comfortable room through the seat and thighs, with a clean leg line that continues from the knee to the open hem.

The leg is intentionally relaxed, but not excessively wide. A full-length finish allows the hem to fall naturally over footwear with minimal stacking.

Both series share the same finished measurements. MX Signature and BX Armor differ in their outer surface finish, not their fit.

• Size Reference

Our bottoms use a separate sizing system from our T-shirts, sweatshirts and hoodies.

Choose your size based on your natural waist and full hip measurements, rather than assuming your usual top size will be the same.

Unisex Size Guide - Recommended Body Chest

• Waist, Hip & Upper Leg (cm / in)

Additional Measurements

• Waistband Height: 4.5 cm / 1.77 in across all sizes.

• Hem Turnback: 3 cm / 1.18 in across all sizes.

• Leg Opening: Open hem without an elasticated cuff.

How to Measure

• Half Waist: Measure straight across the waistband while relaxed. The elastic waistband stretches to accommodate the body.

• Half Hip: Measure straight across the garment at the hip reference point.

• Front Rise: Measure from the top of the front waistband to the crotch seam.

• Back Rise: Measure from the top of the back waistband to the crotch seam.

• Half Thigh: Measure across one leg near the crotch.

• Half Knee: Measure across one leg at the knee reference point.

• Half Leg Opening: Measure straight across the finished open hem.

• Inseam: Measure from the crotch seam to the finished hem along the inside leg.

• Outseam: Measure along the outside leg from the top of the waistband to the finished hem.

For more information, see our Size & Fit Guide for more information.

Our 420 GSM heavyweight bottoms are built around a shared organic cotton French terry foundation, offered in two distinct series: MX Signature and BX Armor.

Both use the same 3-end French terry construction, with a dense outer face and an unbrushed loopback interior.

Within each style, MX and BX share the same fit and finished measurements.

• MX Signature - The Tactile Expression

A controlled Triple Carbon Peach finish gives the outer fabric a softer, matte character, while the interior cotton loops remain unbrushed.

• BX Armor - The Structured Expression

An unbrushed outer face preserves the direct character of the knitted cotton, paired with the same substantial 420 GSM French terry and straight-leg shape.

Straight-Leg Sweatpants: A clean, relaxed leg that falls naturally from the seat to the open hem. Balanced proportions for everyday wear.

Wide-Leg Sweatpants: A fuller silhouette with additional volume through the seat, thigh, knee and leg opening.

Sweat Shorts:A relaxed, above-knee proportion with a wide open leg and substantial heavyweight cotton feel.

All three styles belong exclusively to the VOID collection, available in Black and White with tonal embroidery.

The choice begins with silhouette, followed by the MX or BX surface finish.

Different proportions. The same commitment to material and considered construction.

Fabric Composition

• Main Fabric: 100% Organic Cotton French Terry

• Main Fabric Weight: 420 GSM

• Pocket Bags: Organic Cotton Single Jersey

• Waistband: Organic cotton French terry casing with enclosed elastic

The main fabric composition excludes elastic, sewing thread, labels and other separate components.

Garment Care

• Machine wash cold, maximum 30°C, subject to the garment care label.

• Turn the sweatpants inside out before washing.

• Wash with similar colors; wash dark colors separately.

• Do not bleach.

• Avoid tumble drying.

• Reshape gently and line dry in the shade.

• If ironing is permitted, use low heat on the reverse side and avoid direct contact with embroidery and labels.

Gentle care helps preserve the soft matte exterior, the natural unbrushed loopback interior and the intended fit.

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