Under Armour Men's Mk-1 Shorts - Lightweight Knit 7in Inseam

In this review the Under Armour Men's Mk-1 Shorts are judged as a go-to pair for workouts and everyday warmups; the bottom line is that they deliver lightweight comfort and reliable moisture management for active men. The reviewer found the stretchy knit fabric and 4-way stretch construction make motion feel unrestricted during sprints, gym sets, and casual wear, while mesh side panels and fast-drying material keep things breathable and comfortable. These shorts are best for anyone wanting a simple, low-maintenance active short with a 7in inseam and no liner.

Key Features

• Stretchy knit fabric: Feels exceptionally lightweight against the skin so you can wear these for long practice sessions without chafing.
• Moisture-wicking material: Pulls sweat away from the body and dries quickly to reduce cling during intense effort.
• 4-way stretch: Allows movement in every direction so lunges, cuts, and quick changes of direction feel natural.
• Mesh side panels: Add targeted breathability where heat builds up, helping airflow during hot workouts.
• Encased elastic waistband with drawcord: Provides a secure, adjustable fit for training or casual wear without the need for a belt.
• Open hand pockets: Offer convenient carry for small essentials during errands or cool-downs.

Who It's For

The Mk-1 Shorts are aimed at men who want a versatile active short for gym sessions, team practice, and warmups; the combination of lightweight knit and 4-way stretch works well for runners, field athletes, and strength training. The modest 7in inseam makes them a good middle ground for those who do not want very short or overly long shorts.

Those who need built-in compression or a chamois should look elsewhere, since these shorts come without an inner liner. Also, athletes who require zip pockets or cargo storage for valuables during long outdoor adventures may prefer a different style with more secure pocketing.

Pros & Cons

Pros

• Lightweight knit feels comfortable for long wear and moves well with the 4-way stretch.
• Material wicks sweat and dries fast, reducing discomfort after heavy workouts.
• Mesh side panels improve airflow in hotter conditions.
• Simple waistband with internal drawcord gives an adjustable fit without bulk.

Cons

• No liner means less support for runners who prefer compression or integrated briefs.
• Pockets are open hand pockets only, so small items may not be secure during rapid movement.

Specifications

Brand	Under Armour
Material	90% Polyester / 10% Elastane
Inseam	7in
Pockets	Open hand pockets
Liner	No liner
Waist	Encased elastic with internal drawcord

Our Verdict

The Under Armour Men's Mk-1 Shorts are a solid, value-minded choice for active men who want lightweight, breathable shorts for gym work, warmups, and casual training. Their stretchy knit fabric, moisture-wicking finish, and 4-way stretch make them comfortable and versatile; they are not ideal for those seeking built-in support or secure zip pockets, but for everyday performance they offer dependable utility at a reasonable value.

Frequently Asked Questions

Do these shorts have a liner?
No, the Mk-1 Shorts do not include an inner liner.

How long is the inseam?
The inseam measures 7in for a moderate coverage length.

Are the pockets secure for keys or phone?
They have open hand pockets, so small items may not be fully secure during vigorous activity.