• O Series—the Original Performance Underwear—won’t bunch up or lose its shape
• Heatgear® Moisture Transport System efficiently wicks sweat away from your skin to keep you cool and dry
• Lightweight, 4-way stretch fabric moves with you, recovers, and fits exactly as you want it to.
• Articulated mesh crotch for comfort, ventilation, and support
• Anti-Odor technology prevents the growth of odor-causing bacteria.

O SERIES: The Original Performance Underwear that rendered everything else obsolete. UA's signature Moisture Transport System and temperature regulation gave male athletes of all kinds something they'd never had before…a high performance alternative to all the other underwear in their drawer. You’ll have to try a couple pair yourself to really understand the difference. But like so many men who have tried Under Armour, you can forget underwear that bunches up, pulls, sticks, wears out, or loses its shape—UA's O Series underwear stretches, recovers, and fits exactly the way you want it to. The performance waistband stretches with you, without binding or pinching. Lightweight UA HeatGear fabric efficiently wicks sweat away from your skin to the outer layer of the garment, helping to keep you cool and dry. The articulated mesh crotch offers additional comfort, ventilation, and support. And Under Armour uses proven Anti-Odor Technology that prevents the growth of odor causing microbes. HeatGear® does its job…so you can focus on yours. You may never wear standard undershorts again. Available in Black or Medium Grey Heather; Men’s Sizes S-XXXL.

FEATURES:

• The Original Performance Underwear offers a welcome alternative to all the other underwear in your drawer.
• UA's HeatGear® Moisture Transport System wicks sweat away from your skin to help you stay cool, dry, and comfortable
• Performance waistband & lightweight 4-way stretch fabric moves with you, recovers, and fits exactly as you want it to.
• Articulated mesh crotch for comfort, ventilation, and support
• Anti-Odor technology fabric treatment prevents the growth of odor causing bacteria.
• Comfortable mid-length 6” inseam guards against chafing
• FABRIC TECH:90% Polyester / 10% Elastane.

Blistering heat to bitter cold. Whatever the climate, whatever the conditions, Under Armour® Performance keeps military, law enforcement, and athletes of all kinds—in or out of uniform—comfortable, dry, and light. Choose the gearline and fit to match your climate and conditions.

FOR WHEN IT’S HOT
Ideal use: Extremely warm weather. Over a decade ago, HeatGear®, the original “second skin” layer, sparked the revolution of performance apparel…and rendered cotton T-shirts obsolete. Under Armour Fabric is a special microfiber blend engineered to wick sweat from your skin to the outer layer of the garment. When it’s hot, HeatGear fabric helps you stay cool, dry, and comfortable.

UA Odor Control
Controls odor by preventing the growth of odor causing microbes.

Strategic Ventilation
Strategic venting built into garment at key points where body dumps heat. Keeps athletes of all kinds cool in extreme heat.

Getting the right Size and Fit
This Under Armor garment is designed to match the Fit profile highlighted and described above. If this is the performance fit you prefer for the way you intend to wear it, please order the same size you would wear in a non-performance T-shirt or pant. Under Armour® Performance has already compensated for the specific design of its apparel to make each style consistent with normal XS–XXXL sizing. Still not sure? Use the chart below to select the size that matches your measurements.

MEN'S SIZES