Wunder Under Crop, $88, available in 7 colors at Lululemon
Best for: Yoga, HIIT, weight training
Why you should buy them: If I could only wear one pair of leggings for the rest of my life, it would probably be these. They're versatile enough for workouts and leisure wear and are made of some of the softest fabric I've ever exercised in.
They're constructed with Luxtreme, Lululemon's signature fabric, which wicks sweat, is super stretchy, and is engineered not to shrink. These truly feel like a second skin, hugging your shape and making it easy to move. I was hesitant to spend almost $90 on a seemingly regular pair of leggings, but I've had these for almost three years and they've held up their shape, softness, and color. Plus, they make my workouts easier by making me feel comfortable, so I think they're a good investment. —Remi Rosmarin, Insider Picks reporter