The Tree Shortsleeve Shirt is crafted from 100% TENCEL™ Lyocell, a fabric derived from sustainably sourced wood pulp produced in a closed-loop facility with minimal waste. The result is a smooth, cool-to-the-touch feel that performs equally well on a beach day, a day hike, or a casual summer outing. Cut in a relaxed regular fit, it transitions effortlessly between active use and everyday wear. The fabric carries the EU Ecolabel certification and is fully biodegradable, and Houdini encourages returns at end of life to support material recovery.