Affordable Athletics: 10 Workout Basics Under $20

Whether you're lounging, stretching after a long day, or at your favorite yoga class, these Old Navy Fold-Over Pants ($9-$20) will be a constant in your workout routine.

Throw on a pair on these cute Forever 21 Dolphin Hem Running Shorts ($16) during a hot yoga class or a heart-pumping date with the treadmill.

Fill up on the go with the 24-ounce Bobble Sport ($10), which has a built-in carbon filter for clean-tasting water when you need it.

Wear it at the gym, wear it out and about — this Every Wear V Neck from Cory Vines ($20) keeps you dry and comfy no matter what you're up to.

These versatile Aerie leggings ($20) will be your new workout buddy. Whether you're in Pilates class, going on a run, or wondering what to wear with your boots, you'll want to reach for this flattering pair.

This simple Cinch Sack ($14) from Land's End has everything you need to carry your gear — multiple pockets, an easy-carry handle, and just the right price.

Seamless, lightly padded, and extremely comfortable, the C9 by Champion Seamless Bra ($11-$19) works just as well under your work outfit as your gym one. Just what you need for a quick change in the locker room.

Forgetting your socks when you get to the gym isn't fun for anyone. Stock up on cushy ankle socks, like these from C9 by Champion ($9), so you can stash an extra pair or two in your bag.

Your post-workout cover-up should be a light, breathable layer that helps you feel confident and doesn't make you constantly wipe away sweat. Try this flowy, light Arroyo Hoodie from Fabletics ($20, originally $25).

You can never have enough sweat-wicking workout tanks for any type of exercise. This H&M Sports Tank Top ($18) definitely fits the bill.