Technical base layers for thermal regulation and moisture management during long training sessions and multi-day competitions. Shooting is a static sport — and static athletes get cold in ways that active athletes don't. A well-chosen base layer keeps your core temperature stable without adding bulk that interferes with your shooting suit fit or sling position. Sport Shooting Depot carries base layers appropriate for indoor 10-meter training and outdoor three-position and prone events, where temperature variation across a morning of relay shooting is a real performance factor. Look for materials that wick moisture without compressing uncomfortably under a shooting jacket, and that maintain their shape across repeated compression cycles as you adopt and release your position. For made-to-measure suit owners, discuss base layer thickness with your fitter — even a millimeter of added bulk changes the suit's contact geometry.