This isn't another muscle tee - it's a sleeveless work tee built to keep you cool on the job when temps climb. The Martin Sleeveless Pocket Tee is made from a two-way stretch midweight jersey that's flexible, moisture-wicking, and breathable. We added a hidden pen holster to the chest pocket and designed it with drop-shoulder seams that eliminate irritation from shoulder straps and over-the-shoulder hauling. All the performance and utility you need - engineered so you stay cool while working in the heat.