Men's Mk-1 Shorts by Under Armour - Lightweight 7ft Inseam

Our review of the Under Armour Men's Mk-1 Shorts finds them best suited to athletes and active men who want a reliable, lightweight short for practice, warm ups, and post-workout wear. The single biggest reason to buy is simple: the stretchy knit fabric combines remarkable lightness with rapid sweat wicking, so these shorts stay comfortable during high-movement sessions. They are not a compression or lined short but instead aim for breathable versatility, and that focus on light, fast-drying performance defines the Mk-1 experience.

Key Features

• Stretchy knit fabric: feels super lightweight against the skin and allows for unrestricted movement during sports and training.
• Moisture-wicking material: pulls sweat away from the body to dry quickly so the shorts stay comfortable through intense workouts.
• 4-way stretch: the fabric stretches in every direction which helps the shorts move with you on cuts, sprints, and dynamic drills.
• Mesh side panels: add targeted breathability to reduce overheating when intensity rises or when layered over bases.
• Encased elastic waistband with drawcord: secures fit without digging in and lets you fine-tune tension for different activities.
• Open hand pockets: provide simple storage for small items when you are on the go or between sets.

Who It's For

The Mk-1 shorts are ideal for men who prioritize light weight and freedom of movement: runners, gym-goers, and team-sport players who need a short that breathes and dries quickly. The 7' inseam hits a middle ground that suits most training needs without feeling oversized.

Those who want built-in support or a separate liner should look elsewhere, since these shorts have no liner. If you need heavy-duty pockets for work or technical hiking features, a more purpose-built short would be a better choice.

Pros & Cons

Pros

• Lightweight knit fabric offers great all-day comfort for active use.
• Material wicks sweat and dries fast, keeping you comfortable in long sessions.
• 4-way stretch and mesh side panels improve mobility and airflow under load.
• Simple waistband and pockets strike a good balance of fit and practicality.

Cons

• No liner included, so they may not suit users seeking built-in support or compression.
• Pockets are open hand style, which is less secure for valuables during intense movement.

Specifications

Brand	Under Armour
Model	Mk-1 Shorts (Men)
Material	90% Polyester / 10% Elastane
Inseam	7' in
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 strong choice for anyone seeking a lightweight, breathable training short that moves well and dries fast. They deliver solid value for athletes and regular gym users who do not require a liner, offering comfort and practical features without excess weight.

Frequently Asked Questions

Do these shorts have a built-in liner?
No, the Mk-1 shorts do not include a liner; they are designed as a lightweight outer short.

What is the inseam length?
The inseam is 7' in, which provides moderate coverage suitable for most training activities.

Are there secure pockets?
The shorts have open hand pockets for easy access, but they are not zippered, so small valuables may shift during vigorous movement.