One of the best perks of working at Health is that I'm lucky enough to test a lot of activewear. As a result, I've become very, very opinionated about leggings, and prefer different brands for different activities: supersoft Manduka leggings are my go-to for flights; Onzie leggings are lightweight, making them ideal for an outdoor run; and Visakai leggings, with their built-in underwear, help me flow through my weekly vinyasa yoga class.

Recently, though, I had the opportunity to try leggings from Core 10, Amazon's newest private athletic brand. The line includes both sports bras and tights, but it was their Build Your Own Bottoms that caught my eye. The tool lets you customize your own perfect pair of leggings by selecting the length, waistband, and style of your choice. Prices range from $59 for capris to $69 for full length. I went with the high-waist leggings in the 7/8 length.

To buy: from $59; amazon.com

My order arrived a few days before I was scheduled to go on a two-week vacation, and since I'd already packed most of the leggings in my regular rotation, I decided to debut the Core 10 bottoms on the five-hour flight. Let me tell you that they were incredibly comfortable—the perfect amount of stretch, a high waistband that sat comfortably on my midsection (no annoying digging!), and a fit that hugged my curves but never felt like my circulation was cut off.

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They were so comfy, in fact, that I kept wanting to re-wear them throughout my trip, even though I had my other faves stashed in my suitcase. My Core 10 leggings carried me through multiple hotel gym workouts, a three-mile hike, and two flights (don't worry—I laundered them between wears).

There is one catch, though: The Core 10 line is a Prime exclusive, meaning you must have a subscription to the service to order them. If you aren't a member already, you can sign up for a 30-day free trial here.