Introducing the Runyon Pump-You-Up™ 7" Sweatshorts — our modern performance update to the classic American sweatshort. Made from heavyweight 14 oz 100% cotton French Terry grown and knitted in the USA, these natural-fiber gym shorts combine breathable comfort with Runyon's original dual stash-pocket design. Built for strength training, workouts, hiking, jogging, recovery days and everyday wear, they're designed for athletes looking for an alternative to synthetic-heavy activewear.

Our Natural Fiber Workout Shorts

Made from USA-grown and USA-knitted 100% cotton French Terry, the Pump-You-Up™ Sweatshorts are designed for athletes who prefer natural-fiber workout shorts without spandex, nylon or polyester in the main fabric. The heavyweight cotton construction provides softness, breathability and natural moisture absorption while maintaining the durability needed for strength training, gym workouts and active everyday wear.

For athletes looking to incorporate more natural fibers into their training wardrobe, these 100% cotton gym shorts provide an alternative to conventional synthetic performance shorts while retaining the functionality needed for workouts, recovery and everyday movement.

We also offer select Pump-You-Up™ Sweatshorts in a French Terry Tri-Blend (50% Cotton, 40% Polyester, 10% Rayon) for those who prefer a lighter, more performance-oriented fabric with additional stretch.

French Terry - Back To That Old School Fabric Technology

French Terry has been used for generations in athletic and training apparel because of its distinctive loop-back construction. The soft interior loops help absorb moisture while the fabric remains breathable and comfortable against the skin. Unlike traditional brushed fleece, French Terry is unbrushed on the inside, helping provide airflow without the added warmth of a fleece interior.

It's old-school fabric technology that still works: soft, breathable, absorbent and durable enough for training while comfortable enough for recovery, lounging and everyday wear.

All About The Details + Original Design

The Pump-You-Up™ Sweatshorts feature Runyon's original dual outside stash-pocket design, created to solve a common problem with traditional gym shorts: phones and other essentials shifting, dangling or falling from loose inside pockets when sitting, lifting or moving through a workout.

The oversized side stash pockets provide convenient storage for a phone, keys, wallet, workout towel, water bottle and other essentials. At the gym, you can carry a water bottle in one pocket and a workout towel in the other while still having room for your phone and keys.

A rugged U.S.-made paracord drawcord and elastic waistband provide a secure, adjustable fit, while the 7-inch inseam delivers comfortable coverage for strength training, hiking, jogging, travel and everyday wear.

Key Features:

• Original Dual Outside Stash Pockets — Designed to securely carry a phone, water bottle, workout towel, wallet, keys & other essentials
• 100% Cotton Natural-Fiber Workout Shorts — An alternative to synthetic-heavy gym and training shorts
• 14 oz USA-Grown & USA-Knitted French Terry Cotton — Heavyweight, breathable, soft & durable
• Designed, Engineered & Field-Tested by Endurance Athletes — Developed through real-world training and everyday use
• Handcrafted in Los Angeles' Historic Fashion District — Supporting American apparel manufacturing
• U.S.-Made Paracord Drawcord — Rugged and built to last
• 7-Inch Inseam — Comfortable athletic coverage for training & everyday wear

Please note: These 100% cotton sweatshorts are not pre-washed or pre-shrunk and will shrink slightly after the first wash. The dimensions in the Size Chart reflect the expected measurements after the first wash.

* Each short features a polyester lining inside the non-skin-touching pockets for enhanced durability, longevity and resistance to pilling.

Designer Commentary

“These shorts have become one of my go-to choices for strength training, especially when the weather cools down. I wanted to create a gym short that combined the comfort of traditional cotton sweatshorts with the functionality I actually need during a workout.

I've been incorporating more cotton and natural fibers into my training gear, and French Terry has become one of my favorite fabrics. Unlike brushed fleece, the interior isn't fuzzy or overly warm. The loop-back construction feels comfortable and breathable, which makes these shorts equally useful for training, recovery and everyday wear.

A major focus of the design was storage. I've never liked gym shorts where a phone dangles inside a loose pocket or feels like it's going to fall out when sitting, driving, bench pressing or using equipment. The Pump-You-Up™ uses the same stash-pocket concept as our Warm-It-Up Jogger Sweatpants, redesigned specifically for a 7" short.

At the gym, I usually keep a water bottle in one pocket and a workout towel in the other, with enough room remaining for my phone and keys. It's a simple design, but it solves one of the biggest frustrations I've had with traditional workout shorts.

I spent months developing and testing these shorts through strength training and everyday use. As an endurance athlete, I've spent thousands of hours training and competing, and that experience continues to influence how I approach Runyon products: start with what an athlete actually needs and design around it.

We also went to considerable lengths to source American-made components whenever possible, including USA-grown cotton, USA-knitted textiles, U.S.-made elastic, U.S.-made paracord and USA-woven labels. The shorts are then cut and sewn in Los Angeles' Historic Fashion District.

The result is our modern interpretation of the classic American sweatshort — natural fibers, functional storage and American manufacturing combined into a short designed for training and everyday life.

I know you'll love these shorts and can't wait to watch them Pump-You-Up!

Tony Nuccio
Designer, Athlete & Founder