The jt3 "32-Singles" 4.2 oz Unisex Airlume Muscle Shirt

Micro-Fine 32-Singles Canvas. Unconstrained Low-Cut Geometry.

An elevated athletic street rotation requires weightless breathability, unconstrained arm mobility, and locked-in side geometry. The jt3 "32-Singles" Airlume Muscle Shirt is engineered from a lightweight 4.2 oz./yd² (142 g/m²) matrix of 100% Airlume combed ring-spun cotton, knit with high-density 32-singles yarn. Moving far beyond stiff, boxy cutoffs, this shirt features wide, low-cut armholes for maximum airflow and zero shoulder resistance, paired with dedicated side-seamed construction to preserve its clean, straight drape wash after wash.

• 4.2oz Featherweight Airlume Canvas: Crafted from 100% Airlume combed ring-spun cotton (142 g/m²)—engineered for maximum thermal ventilation, silky hand-feel, and zero-bulk layering.
• Micro-Fine 32-Singles Yarn: Knit with high-density 32-singles thread to produce an exceptionally smooth, high-grade surface profile that feels weightless and cool against the skin.
• Wide Low-Cut Armhole Cut: Patterned with deep, open armhole openings that maximize rotational range of motion through the shoulders and arms while driving rapid heat dissipation across the core.
• Side-Seamed Architectural Drape: Precision-built with side seams that align with the body's natural geometry, completely preventing the shirt from twisting, wrapping, or torqueing out of alignment.
• Relaxed Street Silhouette: Cut with a relaxed unisex block that drapes fluidly down the torso for an effortless court, gym, or warm-weather aesthetic.

Find Your Perfect Fit

Relaxed Athletic Profile. Unconstrained Street Hang.

This muscle shirt features a true-to-size relaxed block with low-cut armhole clearance that flows naturally over the body.

• For a Clean, Standard Athletic Fit: Order your regular standard size.
• For an Exaggerated, Oversized Street Slouch: Size up one full size to achieve a broader, longer hang over basketball shorts, mesh court bottoms, or utility cargos.

Product Measurements

To guarantee a flawless fit, grab your favorite fitting tank or muscle tee from your closet, lay it flat, and match its dimensions against our size chart below.

A Length

Place the tape measure beside the collar at the highest point of the shoulder (High Point Shoulder) and pull straight down to the bottom hem.

B Width

Lay the garment completely flat and measure straight across the chest area directly below the armpits from side seam to side seam.

Size Chart

Size Label	Length (inches)	Width (inches)
S	26	18
M	27	20
L	28	21 ⅝
XL	29	23 ⅝
2XL	30	25 ⅝

Specs

• 100% airlume combed ring-spun cotton
• Fabric weight: 4.2 oz/y² (142 g/m²)
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes
• Blank product sourced from Nicaragua, Honduras, or the US
• Product measurements are provided by our suppliers and may vary by up to 2" or 5 cm due to standard manufacturing tolerances