jt3 Signature Airlume Muscle Shirt

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

Keep the basketball identity and lose the sleeves. Lightweight 4.2 oz. Airlume combed ring-spun cotton, low-cut armholes and a relaxed fit put the centered jt3 Signature logo on a simple warm-weather staple.

An elevated athletic street rotation requires weightless breathability, unconstrained arm mobility, and locked-in side geometry. The jt3 Signature Airlume Muscle Shirt is engineered from a lightweight 4.2 oz. 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.

• 4.2 oz. Featherweight Airlume Canvas: Crafted from 100% Airlume combed ring-spun cotton —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.

• 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