Engineered for cold-weather performance, the Under Armour CG Armour Fitted Mock combines reliable warmth, rapid moisture management, and unrestricted freedom of movement in a single streamlined garment. Its dual-layer ColdGear® fabric features an ultra-warm brushed interior that traps heat against the body while the smooth, fast-drying exterior shuttles sweat away from the skin. Stretch-mesh panels under the arms and across the back improve ventilation where you need it most, and the 4-Way Stretch construction ensures the shirt moves naturally in every direction. A protective mock neck shields the throat from the cold, and the shaped, dropped hem stays neatly tucked during any activity.
The heart of this shirt is Under Armour's proprietary ColdGear® construction — a two-layer fabric system designed to deliver genuine warmth without unwanted bulk. The brushed interior traps a layer of warm air next to the skin, acting like a thermal lining that keeps your body temperature stable even as outdoor conditions drop. Meanwhile, the smooth outer surface repels moisture and accelerates drying, so sweat never has a chance to chill you from the inside out. The result is a baselayer that performs as well under a jacket on the slopes as it does worn alone during an early-morning run in autumn.
Even in cold conditions, vigorous activity generates heat and moisture that needs to escape. Under Armour addresses this with strategically positioned stretch-mesh panels under the arms and across the upper back — exactly the zones where the body perspires most heavily. These open-weave inserts allow warm, moist air to dissipate rapidly, preventing overheating and maintaining a consistent, comfortable microclimate against the skin. The mesh panels are made from the same stretch fabric as the rest of the shirt, so they flex and recover with every movement without creating any restriction or pressure points.
Unlike traditional base layers that pull and restrict when you reach, twist, or lunge, the CG Armour Fitted Mock is built with a 4-Way Stretch construction that moves with you in all four directions — horizontally, vertically, and diagonally. This is made possible by the 13% elastane content blended with 87% polyester, giving the fabric exceptional elasticity and recovery. Whether you are swinging a golf club, reaching overhead in the gym, or cycling in a low position, the shirt never fights your movement. Once you relax, the fabric snaps back to its original shape, maintaining a clean, fitted silhouette throughout the day.
Performance in cold weather means managing moisture as much as managing warmth. The CG Armour Fitted Mock features a fast-acting wicking system that draws sweat away from the skin and disperses it across the fabric's outer surface where it can evaporate rapidly. This keeps you dry, avoids the uncomfortable clammy feeling that slows you down, and reduces the risk of chilling when you stop moving. Complementing this is built-in anti-odor technology that prevents the growth of odour-causing microbes within the fabric, so the shirt stays fresh over the course of long training sessions and repeated wears between washes.
The fitted cut of this shirt is carefully engineered rather than simply sized down. Seams are relocated away from the shoulder blades, underarms, and other high-friction zones, drastically reducing the chance of chafing during extended wear. The mock neck collar adds a layer of protection around the throat and lower face without the restrictive feeling of a full turtleneck, making it a practical choice for outdoor sport, golf, and everyday cold-weather activity. The shaped, dropped hem provides additional coverage at the lower back and sides, staying neatly in place even during dynamic movements — so you can focus entirely on your performance.
Composed of 87% polyester and 13% elastane, the CG Armour Fitted Mock strikes an ideal balance between warmth, stretch, and lightweight packability. The slim, fitted profile makes it an excellent first layer under a mid-layer fleece, a wind jacket, or a golf waterproof without adding uncomfortable bulk or causing the outer layer to bunch. It is equally at home worn as a standalone top during moderately cool conditions. The knit construction is durable enough to withstand regular machine washing (cold, with like colours), and the fabric retains its shape and performance characteristics wash after wash, making this a reliable investment for your cold-weather wardrobe.
| Style Code | 1366066 |
| Colour | White (100) |
| Gender | Men's |
| Fit | Fitted – streamlined, close to the body without compressing |
| Neckline | Mock neck |
| Sleeve Length | Long sleeve |
| Fabric | 87% Polyester / 13% Elastane |
| Technology | ColdGear®, 4-Way Stretch, Moisture Wicking, Anti-Odor |
| Available Sizes | XS, S, M, L, XL, XXL, 3XL, 4XL |
| Care | Machine wash cold with like colours; non-chlorine bleach only when needed; do not iron, dry clean, or use fabric softeners |
| Size | XS | S | M | L | XL | XXL | 3XL | 4XL |
| Chest (cm) | 76–81 | 86–92 | 96–102 | 106–112 | 116–122 | 127–132 | 137–142 | 147–153 |
| Waist (cm) | 67–70 | 72–76 | 80–85 | 89–94 | 99–104 | 109–116 | 121–127 | 132–138 |
| Hips (cm) | 81–84 | 86–90 | 94–98 | 102–107 | 112–117 | 122–127 | 132–137 | 138–150 |
Size guide values are indicative only. Source: underarmour.com.
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