Brand: Patagonia.

Style: Mens long sleeve crew neck performance T-shirt designed as a lightweight base layer top.

Size: Mens Large (per interior printed neck label).

Color: Gray colorblock with light gray body and darker gray shoulder and sleeve panels.

Materials: Polyester knit construction (per item specifics).

Fabric type: Lightweight performance knit with subtle texture designed for breathable warmth and layering comfort.

Design details: Classic crew neckline with self-fabric collar, raglan-style shoulder panels, and long sleeves with tonal inset panels along the forearms.

Pattern and graphics: Solid gray body with tonal contrast panels and a small Patagonia wordmark printed on the left chest.

Features: Tagless printed neck label for comfort, lightweight knit fabric suitable for layering, long sleeves for added coverage, and curved shirttail hem for improved range of motion and coverage over the hips.

Occasion and use: Versatile outdoor and activewear top ideal for hiking, skiing, cold-weather running, camping, and everyday layering.

Season: Intended for cool to cold weather wear, especially as a base or mid layer in fall and winter conditions.

Logos and branding: Small Patagonia logo at the left chest and printed branding at the interior neck.

Style codes and identifiers: Specific style name, number, or UPC are not clearly visible on the worn interior print.

Special notes: Patagonia mens gray long sleeve performance knit base layer shirt; review all listing photos for additional views of the fabric texture, colorblock construction, and logo placement.