Under Armour Men's Rival Fleece Shorts - Soft, Warm Gym Shorts

Our review of the Under Armour Men's Rival Fleece Shorts finds them best suited to men who want a simple, comfortable pair of gym or lounge shorts with a warm, soft feel. The single biggest reason to buy is the ultra-soft 230g cotton-blend fleece that feels plush against the skin while wicking moisture during workouts, so these work well for cool-weather training or relaxed days at home. Fit and comfort are the standout points, though buyers should note a few mixed reports about colorfastness and exact sizing.

Key Features

• Ultra-soft fleece: The 230g cotton-blend with a brushed inside offers a warm, comfortable layer that still manages to wick sweat and dry quickly during activity.
• Secure waist: An encased elastic waistband with an external drawcord keeps the shorts in place through movement and provides easy adjustment.
• Pocket setup: Open hand pockets and a secure snap back pocket give convenient storage for small items and a dedicated internal phone pocket on the right side.
• Clean length: A roughly 10.75 in inseam delivers coverage that works for both gym sessions and casual wear without feeling too long.
• No liner: The shorts omit an inner liner, which keeps the silhouette simple and lets the soft fleece contact the skin for comfort.

Who It's For

These shorts are ideal for men who prioritize comfort and a soft feel over technical running features. They suit gym-goers, casual athletes, and anyone wanting a warm pair of shorts for cooler days or recovery. The fabric's moisture-wicking finish also makes them practical for moderate workouts.

Shoppers who need a lightweight, speed-oriented running short, a built-in performance liner, or extremely colorfast performance in frequent hot washes may want to look elsewhere. Also, those who prefer a guaranteed exact fit should try them on first, since sizing got mixed feedback from users.

Pros & Cons

Pros

• Very comfortable and soft fabric that makes these great for lounging and light training.
• Practical pocket layout including an internal phone pocket plus a snap back pocket for security.
• Encased elastic waistband with external drawcord allows a reliable, adjustable fit.
• Material wicks sweat and dries faster than typical cotton, adding function to the comfort.

Cons

• Some customers reported color fading after repeated washes, so care is needed to preserve appearance.
• Sizing runs mixed for a minority of buyers, so trying on or checking the size guide is recommended.

Specifications

Material	230g cotton-blend fleece with brushed inside
Inseam	10.75 in
Waist	Encased elastic with external drawcord
Liner	No liner
Pockets	Open hand pockets, right-side internal phone pocket, snap back pocket
Brand	Under Armour Apparel

Our Verdict

The Under Armour Rival Fleece Shorts are a dependable choice for men seeking a soft, warm, and comfortable gym or lounge short that still handles sweat and activity. With useful pockets and an adjustable waist they offer strong everyday value, though buyers should follow care guidance to minimize fading and check sizing if unsure.

Frequently Asked Questions

Do these shorts have a built-in liner?
No, the Rival Fleece Shorts do not include a liner; they are single-layer fleece designed for comfort.

Are there pockets for a phone?
Yes, there is an internal phone pocket on the right side plus open hand pockets and a secure snap back pocket.

How long is the inseam?
The listed inseam is about 10.75 in, giving a moderate coverage suited to gym and casual wear.