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Under Armour Performance Apparel
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Under Armour Underwear

Men's Under Armour Underwear: Jock, Boxer Briefs, Sport Briefs, Boxer Shorts

Under Armour Underwear delivers all-day performance, in lightweight, breathable designs. Under Armour Underwear provides maximum comfort & rapid moisture management. Originally designed for use under athletic uniforms and pads, Under Armour underwear has quickly become an ideal choice for everyone, for work or play. Under Armour sports underwear is a leader in the field because of its unique characteristics & superior moisture-wicking ability. The Under Armour Boxer Brief (one of UA’s first underwear design), has become a favorite choice of underwear for athletes, soldiers, professionals & persons seeking an alternative to cotton based under garments. Constructed of a lightweight blend of silky polyester, & elastane microfiber, UA Underwear is designed to enhance breathability, increase moisture transport & reduce rubbing and irritation.

Under Armour Underwear Preview

Under Armour CleatsShort Boxer Briefs Jock-Black Under Armour Underwear Short Boxer Briefs Jock-Black 0666
Our Price: $19.98

The Under Armour Short Boxer Briefs are designed for a comfortable fit with minimal leg coverage. Showcasing a 100% PolyArmour design and a 3''-inch inseam, the 0666 briefs are perfect for the athletic and professional man. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
Under Armour CleatsBoxer Briefs Jock-White Under Armour Underwear Boxer Briefs Jock-White 0667
Our Price: $19.98

The Boxer Brief from Under Armour is designed for a comfortable fit with full leg coverage. Showcasing a 100% PolyArmour design and a 6''-inch inseam, the 0667 Boxer Brief features the freedom of a boxer, and the support of a brief. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
Under Armour CleatsBoxer Shorts-White Under Armour Underwear Boxer Shorts-White 1000668
Our Price: $19.98

The 1000668 Boxer Short from Under Armour, is designed to be a comfortable, loose fitting boxer short. Showcasing a 100% PolyArmour design with a 4''-inch inseam, the 1000668 is a traditonal style boxer with a generous cut for enhanced comfort and breathability. HeatGear fabric provides increased moisture transport keeping you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsLong Boxer Briefs Jock-Black Under Armour Underwear Long Boxer Briefs Jock-Black 0669
Our Price: $19.98

The Long Boxer Briefs from Under Armour are designed for comfort with extended leg coverage. Showcasing a 100% PolyArmour design and a 9''-inch inseam, the long cut 0669 is ideal for men who desire added coverage and support. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsRelaxed Performance Crew Longsleeve Undershirt-White Under Armour Underwear Relaxed Performance Crew Longsleeve Undershirt-White 1100539
Our Price: $29.98

The Relaxed Performance Undershirt from Under Armour, is part of the latest offering in Performance Underwear. The UA Performance Crew is lightweight and designed to fit close to the body, for cool, dry comfort and performance. Showcasing four-way stretch construction, the 1100539 maintains durability and comfort, wash after wash. The Under Armour Long Sleeve Undershirt features an antimicrobial treatment to combat odor, while built-in UPF 30+ protection blocks over 95% of harmful UV rays, providing essential protection from the sun.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large (XXXL)

Available Colors: Black, White
Under Armour CleatsShort Boxer Briefs Jock-Heather Gray Under Armour Underwear Short Boxer Briefs Jock-Heather Gray 0666
Our Price: $19.98

The Under Armour Short Boxer Briefs are designed for a comfortable fit with minimal leg coverage. Showcasing a 100% PolyArmour design and a 3''-inch inseam, the 0666 briefs are perfect for the athletic and professional man. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
Under Armour CleatsBoxer Shorts-Black Under Armour Underwear Boxer Shorts-Black 1000668
Our Price: $19.98

The 1000668 Boxer Short from Under Armour, is designed to be a comfortable, loose fitting boxer short. Showcasing a 100% PolyArmour design with a 4''-inch inseam, the 1000668 is a traditonal style boxer with a generous cut for enhanced comfort and breathability. HeatGear fabric provides increased moisture transport keeping you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsBoxer Shorts-Heather Gray Under Armour Underwear Boxer Shorts-Heather Gray 1000668
Our Price: $19.98

The 1000668 Boxer Short from Under Armour, is designed to be a comfortable, loose fitting boxer short. Showcasing a 100% PolyArmour design with a 4''-inch inseam, the 1000668 is a traditonal style boxer with a generous cut for enhanced comfort and breathability. HeatGear fabric provides increased moisture transport keeping you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsLong Boxer Briefs Jock-White Under Armour Underwear Long Boxer Briefs Jock-White 0669
Our Price: $19.98

The Long Boxer Briefs from Under Armour are designed for comfort with extended leg coverage. Showcasing a 100% PolyArmour design and a 9''-inch inseam, the long cut 0669 is great for wearing underneath your basketball and gym shorts. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsRelaxed Performance Crew Longsleeve Undershirt-Black Under Armour Underwear Relaxed Performance Crew Longsleeve Undershirt-Black 1100539
Our Price: $29.98

The Relaxed Performance Undershirt from Under Armour, is part of the latest offering in Performance Underwear. The UA Performance Crew is lightweight and designed to fit close to the body, for cool, dry comfort and performance. Showcasing four-way stretch construction, the 1100539 maintains durability and comfort, wash after wash. The Under Armour Long Sleeve Undershirt features an antimicrobial treatment to combat odor, while built-in UPF 30+ protection blocks over 95% of harmful UV rays, providing essential protection from the sun.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large (XXXL)

Available Colors: Black, White
Under Armour CleatsRelaxed Short Sleeve Undershirt-Black Under Armour Underwear Relaxed Short Sleeve Undershirt-Black 0884
Our Price: $19.98

The Relaxed Short Sleeve Undershirt from Under Armour, is part of the latest offering in Performance Underwear. The UA undershirt is lightweight and designed for breathability and moisture transport. Four way stretch is added to the 0884 to add durability and comfort, wash after wash. Tonal Under Armour logo on front.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL)

Available Colors: Black, White
Under Armour CleatsBoxer Briefs Jock-Heather Gray Under Armour Underwear Boxer Briefs Jock-Heather Gray 0667
Our Price: $19.98

The Boxer Brief from Under Armour is back by popular demand. Extensive research and tests by athletes, soldiers and everyday users, showed that subtle updates could take the first piece of true performance underwear and elevate it to a level unmatched by any other manufacturer. Designed for a comfortable fit with full leg coverage, the all NEW 0667, showcases a 100% PolyArmour design and a 6''-inch inseam. Showcasing the freedom of a traditional boxer, and the support of a traditional brief, the 0667 now has a built in vent mesh performance pouch, to provide enhanced breathability and increased moisture transport. Heat Gear construction keeps you cool and dry all day long, essential for all environments.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
Under Armour CleatsShort Boxer Briefs Jock-White Under Armour Underwear Short Boxer Briefs Jock-White 0666
Our Price: $19.98

The Under Armour Short Boxer Briefs are designed for a comfortable fit with minimal leg coverage. Showcasing a 100% PolyArmour design and a 3''-inch inseam, the 0666 briefs are perfect for the athletic and professional man. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
Under Armour CleatsRelaxed Short Sleeve Undershirt-White Under Armour Underwear Relaxed Short Sleeve Undershirt-White 0884
Our Price: $19.98

The Relaxed Short Sleeve Undershirt from Under Armour, is part of the latest offering in Performance Underwear. The UA undershirt is lightweight and designed for breathability and moisture transport. Four way stretch is added to the 0884 to add durability and comfort, wash after wash. Tonal Under Armour logo on front.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL)

Available Colors: Black, White
Under Armour CleatsLong Boxer Briefs Jock-Heather Gray Under Armour Underwear Long Boxer Briefs Jock-Heather Gray 0669
Our Price: $19.98

The Long Boxer Briefs from Under Armour are designed for comfort with extended leg coverage. Showcasing a 100% PolyArmour design and a 9''-inch inseam, the long cut 0669 is ideal for men who desire added coverage and support. A built in vent mesh performance pouch provides enhanced breathability and increased moisture transport without sacrificing comfort. HeatGear fabric keeps you cool and dry all day long.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray, White
Under Armour CleatsBoxer Briefs Jock-Black Under Armour Underwear Boxer Briefs Jock-Black 0667
Our Price: $19.98

The Boxer Brief from Under Armour is back by popular demand. Extensive research and tests by athletes, soldiers and everyday users, showed that subtle updates could take the first piece of true performance underwear and elevate it to a level unmatched by any other manufacturer. Designed for a comfortable fit with full leg coverage, the all NEW 0667, showcases a 100% PolyArmour design and a 6''-inch inseam. Showcasing the freedom of a traditional boxer, and the support of a traditional brief, the 0667 now has a built in vent mesh performance pouch, to provide enhanced breathability and increased moisture transport. Heat Gear construction keeps you cool and dry all day long, essential for all environments.

Available Sizes: Small(SM), Medium(MD), Large(LG), Extra-Large(XL), 2X-Large(XXL), 3X-Large(XXXL)

Available Colors: Black, Heather Gray and White
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