











UA Base 4.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.
Polyester / Elastane Blend
Slim Fit
Running
Size Guide
| Size | Chest (in) | Waist (in) |
|---|---|---|
| XS | 31 - 34 | 28 - 29 |
| S | 34 - 37 | 29 - 31 |
| M | 37 - 41 | 31 - 34 |
| L | 41 - 44 | 34 - 37 |
| XL | 44 - 48 | 37 - 41 |
| XXL | 48 - 52 | 41 - 45.5 |
| 3XL | 52 - 56 | 45.5 - 50 |
| 4XL | 56 - 60 | 50 - 54.5 |
| 5XL | 60 - 64 | 54.5 - 59 |
Compression — Ultra-tight, second-skin fit that keeps you locked in.
Fitted — A slimmer, athletic cut that allows total mobility but eliminates the bulk of extra fabric.
Loose — Fuller cut for complete comfort, total range of motion and greater breathability.
Chest — Place tape measure under your arms at the fullest part of your chest, wrap around your body until your fingers meet and mark the measurement.
Waist — Measure around your natural waistline. Be careful not to squeeze too tight to allow give.
Tall Sizes — All tall sizes are 2" longer than regular sizes. Sleeve lengths are adjusted proportionately depending on silhouette.
| Size | US Size | Waist (in) | Hip (in) |
|---|---|---|---|
| XS | 28 | 28 - 29 | 33 - 34 |
| S | 30 | 29 - 31 | 34 - 36 |
| M | 32 - 33 | 31 - 34 | 36-39 |
| L | 34 - 36 | 34 - 37 | 39 - 42 |
| XL | 38 - 40 | 37 - 41 | 42 - 46 |
| XXL | 42 - 44 | 41 - 45.5 | 46 - 50 |
| 3XL | 46 - 48 | 45.5 - 50 | 50 - 54 |
| 4XL | 50 - 52 | 50 - 54.5 | 54 - 58 |
| 5XL | 54 - 56 | 54.5 - 59 | 58 - 62 |
Compression — Ultra-tight, second-skin fit that keeps you locked in.
Fitted — A slimmer, athletic cut that allows total mobility but eliminates the bulk of extra fabric.
Loose — Fuller cut for complete comfort, total range of motion and greater breathability.
Waist — Measure around your natural waistline. Be careful not to squeeze too tight to allow give.
Hip — With your feet shoulder width apart, measure around the fullest part of your hips to ensure you will have enough room to move comfortably.
Tall Sizes — All tall sizes are 2" longer than regular sizes.