Under Armour's Heatgear Tactical Full Tee USMC Approved is a relaxed fit Tee with Moisture Transport System.

The XGO Phase 1 USMC Certified T-Shirt is easy to care for... just toss in the wash and dry.

The TRU Tactical Response Uniform Shirt has more special features for the tactical officer than any other uniform on the market.

The Arc'teryx Minotaur Halfshell Shirt is a durable, breathable, wind and weather resistant hybrid shirt designed to be worn under armor or simply on its own as a technical mid-layer jacket.

Lightweight, long-sleeved, Arc'teryx Talos Halfshell shirt with cotton-knit jersey fabric in the torso, and durable cotton/ripstop nylon in high-wear areas. Designed to be worn under body armor or a backpack.

The XGO Phase 1 Relaxed T-Shirt is a breathable, quick-drying technical mesh that is ideal for hot to temperate weather.

The Eon SLW Men's T-Shirt is a lightweight base layer constructed using Merino Wool to maximize moisture management and is ideal for active use and during extended backcountry trips.

The XGO Phase 1 Men's Flame-Retardant Long-Sleeve Crew is a lightweight, moisture-wicking flame-retardant garment meant for use in warm and cold weather environments.

The XGO Phase 1 Men's Flame-Retardant T-Shirt is a lightweight, moisture-wicking flame-retardant garment meant for use in warm and cold weather environments.