We all hate it — that stiff, distracted feeling you get when you're out in the cold. That's why Under Armour built the ColdGear® Compression Mock: a men's baselayer top engineered to keep you warm and dry without being bulky or riding up, so you can stay focused all season long. Constructed from UA's signature dual-layer ColdGear® fabric and featuring an ultra-tight, second-skin compression fit, this long-sleeve mock-neck top is the go-to cold-weather base layer for golf, running, training, and every outdoor activity in between.
The hallmark of this top is its signature dual-layer ColdGear® construction. The inner layer features an ultra-warm, brushed fleece-like surface that traps heat and keeps it close to your skin, preventing that stiff, cold feeling even in freezing temperatures. The outer layer is smooth and engineered to dry rapidly, moving moisture away from the body before it has a chance to chill you. Together, the two layers deliver the perfect warmth-to-weight ratio — significantly warmer than a single-layer shirt yet light and non-bulky enough to layer effortlessly under a waterproof jacket or golf mid-layer.
Even in cold weather, intense activity generates heat and sweat. Under Armour addresses this with stretch-mesh panels positioned at the back and under both arms — two of the body’s highest heat-output zones. The open-knit mesh allows warm, humid air to escape and fresh air to circulate, preventing overheating mid-run or mid-round without exposing you to a cold draught. The panels are made from a stretchable mesh so they move completely in sync with your body and never restrict your swing or stride.
Traditional thermal shirts can feel stiff and restrictive, limiting your backswing or running gait. The ColdGear® Compression Mock solves this with 4-way stretch construction that allows the fabric to expand and contract in all directions — vertically, horizontally, and diagonally. This means the top moves with you rather than against you, delivering full athletic range of motion whether you’re reaching for the overhead rack, swinging a golf club, or pushing through a hill sprint. The result is freedom of movement that feels as natural as wearing nothing at all, even under multiple layers.
ColdGear® fabric actively wicks perspiration away from the skin and disperses it across the exterior surface area, where it dries very quickly. This keeps you feeling dry and comfortable even during high-intensity cold-weather sessions where conventional thermal tops would become heavy and clammy. Built into the fabric is Under Armour’s Anti-Odor technology, which works at the microscopic level to inhibit the growth of odor-causing microbes. The result is a top that stays fresh and performs wash after wash, season after season, without losing its technical properties.
Every construction detail of the ColdGear® Compression Mock is engineered around the athletic body in motion. Seams are deliberately routed away from the highest-abrasion contact zones — such as under the arms and across the shoulders — eliminating the hot spots and irritation that accumulate over a long round or training session. The fitted mock neck collar adds meaningful warmth and wind protection around the throat and lower face, a critical area that is often exposed in conventional crew-neck baselayers. The dropped, shaped hem provides extra lower-back coverage and stays neatly tucked in when layered under trousers or shorts.
The ultra-tight, second-skin compression fit is central to the ColdGear® system. By hugging the body closely without gaps or folds, the fabric maintains maximum thermal efficiency and ensures that no cold air can tunnel between layers. The compression also supports active muscles, reducing vibration-related fatigue during prolonged activity and aiding in faster recovery after training. Because the profile is so slim and smooth, the mock sits seamlessly beneath a golf mid-layer, a softshell jacket, or a rain suit without adding any visible bulk or restricting the fit of the outer garment.
| Specification | Detail |
|---|---|
| Brand | Under Armour |
| Model | ColdGear® Compression Mock |
| Style Number | 1366072-001 |
| Color | Black (001) |
| Gender | Men’s |
| Fit | Compression (ultra-tight, second-skin) |
| Neckline | Mock neck |
| Sleeve Length | Long sleeve |
| Fabric Composition | 87% Polyester, 13% Elastane |
| Technology | ColdGear® dual-layer fabric, 4-Way Stretch, Anti-Odor |
| Available Sizes | XS, S, M, L, XL, XXL, 3XL, 4XL |
| Care | Machine wash cold with like colors; tumble dry low; do not iron; do not use fabric softeners; do not dry clean |
| 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 |
Values shown are indicative body measurements. Source: underarmour.com. If you are between sizes, Under Armour generally recommends sizing up for a more comfortable fit.
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