CORTES POLARTEC DELTA LONG SLEEVE SHIRT

Stay Cool. Go Far.

The Why Behind The Design

Lecture
Brise Schoeller Pant

Discover Life In Motion

The Why Behind The Design

Lecture

Made to Move When It’s Hot

The Cortes is your go-to shirt for high-output activity in the heat. Whether you’re running, hiking, or traveling in humid conditions, it’s designed to keep you comfortable and dry. Made with Polartec® Delta™ fabric, it leverages your body’s natural cooling process by retaining a small amount of moisture to enhance evaporative cooling. The result is a shirt that keeps you cool without clinging or saturating.

Crafted from 73% recycled polyester and 27% Tencel™, the Cortes is not only high-performing but also environmentally conscious. Its lightweight, breathable design ensures you stay comfortable during intense activities, making it an essential piece for your summer wardrobe.

 Key Features

Design Details That Matter

Every element of the Cortes is purpose-built for high-output performance in warm, humid conditions — from the fabric choice to the venting and finish. Nothing extra, nothing overlooked.

“We designed the Cortes for those days when the heat is relentless. It’s about staying cool and comfortable, no matter how intense the activity. With Polartec® Delta™, we’ve created a shirt that works with your body to regulate temperature naturally.”

— Anthony Boronowski, Co-Founder
Photo of the polartec fabric mill finishing fabric
Premium fabric, built for performance.

Why Polartec?

Polartec® is a pioneer in performance textiles — known for developing advanced fabrics trusted by athletes, explorers, and the outdoor industry for over four decades. Delta™ is one of their most innovative technologies, designed specifically for managing heat and moisture during high-output activity in hot conditions.

Engineered with a unique knit structure and a blend of hydrophilic and hydrophobic fibers, Polartec® Delta™ enhances the body’s natural cooling process while reducing wet cling. It’s lightweight, breathable, and sustainably made using recycled materials. You won’t find it in typical long sleeves — but once you wear it in the heat, you’ll understand why we do.

Made to Move, Built to Last

Hot-weather performance, everyday comfort — without compromising breathability, feel, or function.

Cortes Polartec® Delta™ Long Sleeve Shirt

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