The MIER Men's 5" Athletic Running Shorts are made from a soft, lightweight blend of 95% recycled polyester and spandex, offering 4-way stretch for unrestricted movement. These breathable, quick-drying shorts feature UPF 50+ sun protection, making them ideal for outdoor activities. Designed with a...

MIER Men’s Workout T-Shirt offers UPF 50+ sun protection, blocking 98% of harmful UV rays while providing lightweight, ultra-soft comfort. The 4-way stretch fabric moves naturally with your body, allowing for unrestricted performance during any activity. Designed with dry fit technology, this shirt wicks...

Lightweight Quick Dry Running Hoodie with Sun Protection, Thumbholes & Pocket Stay protected, comfortable, and ready for every mile with the MIER Men's UPF 50+ Performance Long Sleeve Hoodie. Designed for runners, hikers, anglers, and outdoor enthusiasts, this lightweight running hoodie combines advanced sun...

Built for race-day performance, the MIER Men’s Running Race Tank delivers 2.5 oz. (70 g) ultralight comfort and speed. Crafted with breathable AirMesh, 4-way stretch, and bonded seams, it’s engineered for training miles and finish-line moments.   Features: 2.5 oz. (70 g) Ultralight Build...

The same Limitless performance, with added coverage. These 3.5" running shorts are built from ultra-light, quick-dry fabric with a breathable liner and versatile storage—ideal for marathon training, race day, and long-distance runs. Why These Are the Best Marathon Shorts (3.5" Option) For runners who...

MIER Men's COOLMAX® Performance T-Shirt The Ultimate Moisture-Wicking Minimalist Running Shirt Elite Cooling: Powered by COOLMAX® technology, this 4-channel fiber system pulls sweat away instantly, keeping you dry during high-intensity marathons or humid trail runs. Total Mobility: Ultra-lightweight 4-way stretch fabric and a split...

Train harder. Move freer. Stay cool. These lightweight 5" performance shorts are built for high-output training with fast-drying stretch fabric, breathable airflow zones, and secure pockets that keep your essentials accessible yet sure. Designed to disappear while you move — and show up when...

Built for speed and distance, the Limitless 2.5" Shorts are lightweight running shorts designed for race day and high-performance training. From track sessions to marathons and ultramarathons, they deliver breathable comfort, a secure fit, and zero-distraction movement. Why These Are the Best Marathon Shorts?...

Designed for race day and daily training, the MIER Running Belt delivers secure storage, zero bounce comfort, and smart race ready details in a slim, barely there profile. Carry your essentials confidently whether you’re running, racing, or on the move. Race Bib Clips &...

The X-Sofort® High-Mobility Tank: Total FreedomDesigned for the athlete who needs zero distractions during dynamic movements. The X-Sofort® High-Mobility Tank features a refined, streamlined silhouette with tapered straps to unlock your full range of motion. It’s the ultimate "barely-there" layer for heavy lifting and...

The Ultimate "Second-Skin" Muscle Tank Stop choosing between a shirt that performs and a shirt you actually want to wear all day. We designed the MIER Performance Tank with a premium, peached finish that mimics the weightless, buttery-soft feel of high-end luxury activewear. Whether...

Men's Quarter Zip Pullover Fleece Lined Midweight Long Sleeve Elevate your cold-weather training with our men's fleece lined quarter zip pullover. This midweight long sleeve is crafted for runners, athletes, and outdoor enthusiasts who need warmth without sacrificing breathability or mobility. Perfect as a...