Under Armour Men's Mk-1 Shorts for Training - Lightweight Knit

In this review of the Under Armour Men's Mk-1 Shorts the bottom line is simple: these are a go-to pair for men who want lightweight, sweat-managing shorts for training, warmups, or casual wear. The reviewer found the stretchy knit fabric notably comfortable and appreciated the quick-dry performance when sessions ran long. With a 7' inseam and mesh side panels the shorts strike a balance between coverage and airflow, making them an easy pick for athletes who value movement and temperature control without a liner getting in the way.

Key Features

• Stretchy knit fabric: provides a soft, lightweight feel that lets the shorts move with the body during dynamic drills and everyday wear.
• Moisture wicking material: pulls sweat away from the skin and dries quickly so the wearer stays more comfortable during long practices.
• 4-way stretch: enables unrestricted movement in every direction, useful for sprinting, lunges, and lateral work.
• Mesh side panels: add targeted breathability to help airflow along the hips and outer thighs during high-intensity work.
• Encased elastic waistband: with an internal drawcord for a secure, adjustable fit without bulk.
• Open hand pockets: let the wearer carry small items or warm hands while keeping the short design streamlined.

Who It's For

The Mk-1 Shorts are best for men who need a versatile, lightweight training short for gym sessions, field practice, or warmups. Runners, multi-sport athletes, and anyone who prefers shorts without an internal liner will appreciate the quick-drying knit and 4-way stretch that supports a range of motion.

Those seeking compression or built-in support from a liner should look elsewhere, and if you need cargo-style storage or very long coverage, the 7' inseam and simple pocketing may feel minimal. For everyday active use and layered training outfits, these shorts are an effective, low-fuss option.

Pros & Cons

Pros

• Very lightweight knit fabric that feels comfortable for long wear.
• Effective moisture wicking and fast drying for sweaty workouts.
• 4-way stretch and mesh panels improve movement and ventilation.
• Simple adjustable waistband and practical open pockets.

Cons

• No internal liner, so they lack built-in compression or extra support some users prefer.
• Pocket storage is basic and not secure for larger items during vigorous activity.

Specifications

Brand	Under Armour
Material	90% Polyester / 10% Elastane
Inseam	7' in
Pockets	Open hand pockets
Waist	Encased elastic with internal drawcord
Liner	None

Our Verdict

The Under Armour Men's Mk-1 Shorts deliver lightweight comfort and reliable moisture management for a wide range of training needs. They are good value for men who want an unrestricted, breathable short without a liner, offering practical features like 4-way stretch and mesh panels that support movement and airflow.

Frequently Asked Questions

Do these shorts have a liner?
No, the Mk-1 Shorts do not include an internal liner; they are designed as a simple, unlined short.

What is the inseam length?
The shorts have a 7' in inseam, providing moderate coverage suitable for most training activities.

Are the shorts good for high-intensity workouts?
Yes, the 4-way stretch fabric, mesh panels, and moisture-wicking material make them well suited to high-intensity sessions where mobility and breathability matter.