2XU makes smart workout leggings that feel like a thin second-skin for maximum breathability and minimal interference.
2XU is the performance athletic wear brand founded by former professional triathlete Jamie Hunt, and it's well-known for its quality and tech. The company says its clothes are proven by independent, scientific research to deliver real physiological benefits to athletes. (2XU is tested using the Salzmann pressure measurement device to ensure the right pressure is achieved in compression and the Instron tensile strength tenser to measure strength and resistance.) Either way you slice it, you'll see plenty of professional athletes decked out in the gear — from the NBA to the US Navy SEALs.
2XU uses a proprietary PWX compression fabric. It's flexible, incredibly lightweight, and durable so you can put it through plenty of tough workouts. The company also uses graduated compression, so your waistband will lay flat without causing discomfort, and targeted compression works to increase blood flow, reduce blood lactate, and increase lymphatic drainage to help you be more efficient in the workout and during recovery.
I've worn dozens of workout leggings over the last six years as a runner and over the last three as a product reviewer. 2XU leggings are the best intersection of fit, comfort, breathability, flexibility, and durability that I've encountered.
I swear by the company's MCS Run Compression Tights (from $118.68) for their anatomical compression mapping. The MCS tights are sports-specific, so this pair has strategic internal compression that targets your calves and quads to reduce muscle fatigue as you run. For cross-training, check out this pair (from $104.13).
In the past, there have been complaints that 2XU tights could be see-through. In response, the company added extra paneling in strategic places for greater security. I never experienced an issue in the older iteration, nor in the next generation.
The leggings typically come in dark colors and patterns and range in size from XXS to XXL. If you're curious about sizing, check out the sizing chart offered on products on Amazon, and if between sizes, size up for a physical activity and down for recovery use.
Paying upwards of $100 isn't ideal for exercise leggings, but if you're looking for the best option overall, that would be these. If you have the budget, they'll perform better than their competitors and stay fresh for longer than an inferior pair. Otherwise, look into Girlfriend Collective's LITE leggings for flattering, under-$80 leggings that are nearly as breathable as 2XU for less money and the added perk of sustainable materials. —Mara Leighton
Pros: Graduated compression, extremely breathable, flexible, durable
Cons: Expensive, complaints of sheerness