Under Armour Men's Mk-1 Shorts - Lightweight, Fast-Drying Active

In this review the Under Armour Men's Mk-1 Shorts stand out as a straightforward, performance-focused option for men who need lightweight, breathable shorts for training and everyday active use. The biggest reason to buy is the combination of a stretchy knit fabric and quick-drying, sweat-wicking construction that keeps movement unrestricted and skin dry during workouts. The review finds them especially suited to warm-weather training, warm ups, and post-game comfort thanks to a 7'in inseam and mesh side panels that increase airflow without adding bulk.

Key Features

• Lightweight knit: The stretchy knit fabric feels barely there and allows for comfortable movement during long sessions or layered use.
• Moisture-wicking: Material wicks sweat and dries fast so clothes stay comfortable during high-intensity efforts.
• 4-way stretch: The 4-way stretch construction moves with the body for better mobility in every direction, useful for agility drills and dynamic workouts.
• Breathable panels: Mesh side panels add ventilation where heat builds, helping cool the body during sustained exercise.
• Secure fit: An encased elastic waistband with internal drawcord provides an adjustable, secure fit without irritation.
• Functional storage: Open hand pockets give easy on-the-go storage for keys or small items without a liner.

Who It's For

The Mk-1 Shorts are best for active men who want a simple, lightweight short for gym training, warm ups, and casual sport. Runners who prefer a 7'in inseam for a balance of coverage and freedom, gym-goers who need breathable fabric, and anyone who values quick-drying materials will appreciate these shorts.

Those who need a built-in liner, compression support, or insulated cold-weather gear should look elsewhere; these are designed for breathability and freedom rather than layered support or thermal protection.

Pros & Cons

Pros

• Very lightweight and comfortable due to stretchy knit fabric.
• Effective sweat-wicking and fast-drying performance for intense sessions.
• 4-way stretch and mesh panels improve mobility and ventilation.
• Encased waistband with internal drawcord keeps the fit secure without bulk.

Cons

• No internal liner may be a drawback for those who prefer added support or coverage.
• Pockets are open hand style, so small items are less secure during vigorous activity.

Specifications

Brand	Under Armour
Material	90% Polyester / 10% Elastane
Inseam	7'in
Pockets	Open hand pockets
Liner	No liner
Ventilation	Mesh side panels

Our Verdict

The Under Armour Mk-1 Shorts are a solid choice for men who want a lightweight, breathable training short that dries quickly and moves with the body. They offer strong value for warm-weather workouts and everyday active wear, though those seeking built-in liners or secure zip pockets should consider other models.

Frequently Asked Questions

Are these shorts lined?
No, the Mk-1 Shorts do not include a liner; they are unlined for a lightweight feel.

What is the inseam length?
The shorts have a 7'in inseam, which balances coverage and mobility for most activities.

Do they dry quickly after sweating?
Yes, the material is designed to wick sweat and dry fast for continuous comfort.