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You should probably buy them in bulk so you have backups.

I have been a BuzzFeed Shopping contributor since 2022.

Unless otherwise specified, all sizes in this post are listed in women's.

Promising review: "Was pleasantly surprised by these underwear. Super comfortable, and it was good for wearing a pad during my period. Highly recommend!"  —Ava S.

Get them from Old Navy for $3.99 (originally $7.99; available in sizes XS–2X and seven colors).

Promising review: "Great quality and feels like you barely have anything on. Very lightweight, breathable. Great buy!" —Retta ❤️

Get a six-pack from Amazon for $14.99 (available in sizes S–XL). 

Promising review: “Ohhhhh my gosh, these sexy, lacy, beautifully made underwear are a wonder. It’s like I’m wearing nothing. The way they were packaged shows the quality. The fit is spot on. These Beautiful, Lacy, Sexy, Black underwear are worth a lot more than I paid.” —Mary

Get them from Amazon for $13.99+ for a pack of five (available in sizes S–5XL and two color combinations).

Promising review: “First off, delivery came a day earlier than what was expected! Kudos!! 👏 💐 The panties I ordered are very comfortable, and I barely noticed I was wearing them. I will definitely be ordering again.” —Kindle Customer

Get a six-pack from Amazon for $12.99+ (available in sizes XS–XXL and 8 color combinations).

Promising review: “I’m so incredibly pleased with this product, you guys don’t even understand. Before, I never really liked wearing thongs until I had to, but lately, after buying this brand, I just want to wear them all the time! They’re very true to size, so they fit just as I wanted them to, and they’re so incredibly comfortable that I honestly forget that I’m wearing them throughout the day. I find myself wishing that I had bought more, and I probably will buy more because they’re just that amazing. Probably one of the best affordable thongs I have ever purchased, and I’m so pleased with this purchase!” —Vanessa

Get a pack of six from Amazon for $8.99 (available in sizes S–XL and six color combinations).

Promising review: “These are cute, comfortable, and do not show as long as you buy the right size.” —Mary15

Get a pack of six from Amazon for $16.99 (available in sizes S–XL and ten color combinations).

Promising review: "I was honestly surprised by how comfortable these are. The material is really soft and stretchy, and they don’t dig in or leave lines under clothes, which is a huge plus. They stay in place pretty well throughout the day and feel lightweight, like you’re barely wearing anything. The only thing I’d say is if you’re between sizes, you might want to size up for a better fit. Overall, though, really happy with them and would definitely buy again." —Kelsey Lighton

Get it from Amazon for $14.99+ (available in sizes S–XXL and five color combos).

Promising review: "I just love these panties! Very feminine and comfortable with such pretty lace. I ordered mine in pastel blue and will be buying the matching bra!"  —G. R.

Get them from Bare Necessities for $21+ (originally $30; available in sizes S–2XL and five colors).

Promising review: "Great product! Some stretchiness to it, so there is give in case you’re a little bit bigger than normal. Durable and comfortable, these boxer briefs stay 90% of the time put where they are. They don’t roll up anywhere. Very comfortable to the point where you forget you’re wearing them. Breathable too." —Merrisa

Get them from Amazon for $24 (available in sizes S–3XL, eight colors, and three-packs).

Promising review: "I bought these panties in several colors for my daughter, and she loves them! So comfortable, and no panty lines!!"  —Hatty T

Get them from Intimissimi for $9+ (originally $18; available in sizes S–XL and 13 colors).

Promising review: “Most comfortable? Yes! They really are comfortable! Forgot I was wearing them.” —Dragonfly 

Get a pack of three from Amazon for $56+ (available in one size that fits sizes 4–14 and six color combinations).

Promising review: “Best underwear I’ve gotten! Very breathable, cute, and superrr comfortable. I usually hate it when my underwear rolls down/up, but this one doesn't. I forget that I even have them on, that’s how comfortable they are. Will be ordering more for sure!!” —Camila 

Get a pack of six from Amazon for $14.99+ (available in size XS–3XL and ten color combinations).

Promising review: “These are very nice panties. Great quality. Worth the money. Packaging is very nice. They come sealed in an airtight package with washing instructions. They are very comfortable and sexy at the same time. Great colors, too. True to size.” —Rebecca LeBlanc

Get a pack of five from Amazon for $9.99+ (available in sizes XS–3X and seven color combinations).

Promising review: “Soo soft and comfy! These are not tight on you at all. So soft you barely feel like you are wearing anything. The designs are cute, and I'm definitely buying more!” —CarolinainFL

Get a pack of five from Amazon for $14.99+ (available in sizes XS–XXL and eight color combinations).

Promising review: "SO good! I've been searching for comfortable, well-made panties, and these were my third try. Everything I could hope for! Sit perfectly on my frame, don't wedgie me or bunch up, they just stay in place. It's like you're not wearing anything! I loved them so much that I bought two more packs in color and two packs for my niece, who is now obsessed. This is one of those 'I'm absolutely satisfied with this purchase' kinds of purchases. Just get them." —Lheage

Get a five-pack from Amazon for $24.99 (available in sizes XS–7XL and six color options).

Promising review: “Very sexy and comfortable. I love the material's softness, and it stretches well for those with a larger booty like me. I love the variety of colors, and the size is spot on. I will buy these again in the future.” —Sara!!!! 

Get a six-pack from Amazon for $12.99+ (available in sizes S–XXL and four color combinations).

Promising review: “As a mom, I've always looked for shapewear that helps me feel more comfortable and confident in my clothes, and this one has been a great find. It provides nice tummy support without feeling overly tight, and the fabric is soft enough to wear for hours. I also like that it stays discreet under clothing. It gives me a smoother look and a little extra confidence while still feeling comfortable throughout the day.” —Nayaxi Garcia (Nayi)

Get them from Amazon for $11.99 (available in sizes S–3X and 12 colors).

Promising review: “Everyday comfort you can actually feel! These Fruit of the Loom Beyondsoft panties live up to their name. The fabric is genuinely soft and lightweight, with just the right amount of stretch so they move with you instead of digging in or riding up. They hold their shape after repeated washes and don’t shrink or fade, which is rare at this price point. They’re exactly what you want for everyday wear. Comfortable, breathable, and affordable enough to stock up on. If you’re looking for reliable basics that feel great all day long, these are a no-brainer. The length, look, and fit are great and, as expected, and ride height is appropriate as well.” —Michelle Kim

Get them from Amazon for $13.93+ (available in sizes 5–13, six styles, three color combinations, and packs of six, 10, or 12).

Promising review: “Love these. They feel like next to nothing, lightweight, and are so soft and non-irritating to the skin. Highly recommend!” —Summer

Get a five-pack from Amazon for $32.99 (available in sizes S–3XL and 13 color combinations).

Promising review: “Comfortable, the stretch in the material is all over, including leg holes, does not snag or creep up, feels like wearing nothing. Soft, beautiful colors and lace makes it a sexy everyday wear. I don't like underwear to fit too tightly, and they fit just perfectly for me. Would definitely buy again.” —AngelAdvocate 

Get a five-pack from Amazon for $29.99 (available in sizes S–XXL and four color combinations).

Promising review: “These are wonderful! I love to wear them with my leggings or under a dress, they're practically invisible! So comfortable, and my husband thinks they're cute. :)” —WindsorBlue17 

Get a two-pack or five-pack from Amazon for $24.99 (available in sizes S–5XL and six color combinations).

Promising reviews: “Comfy and works well! Pleasantly surprised by how comfy and low-maintenance it is to wear these during my period. Especially at night, they are super helpful. I have a pretty light flow and have had no problems with leaks. :) I'm definitely pleased with this purchase!” —H. Joy 

"Comfortable feel with protection for even my heaviest flow days. Best part — no odor! I’ve tried other period underwear, and they need to be changed mid-day because they stink. These, in contrast, can be worn all day comfortably because they stay dry and odor-free. I forget I’m on my period because they are so comfortable. Easy to wash and the black doesn’t show stains." —Erin Gronewoller

Get them from Amazon for $12.99+ (available in sizes XS–3XL, four color combinations, and packs of one, three, or five briefs).

Promising review: “These are fabulous. They’re not meant for heavy flow; they're for light to moderate flow. They are very comfortable, and I’ve come to love them. I use them with reusable cotton menstrual pads, and I forget I am wearing them. I had an IUD for years, and after its removal, other pads and tampons caused irritation to my skin. This is a great solution.” —Mary T. 

Get a three-pack from Amazon for $24.99 (available in sizes XS–5XL and eight color combinations).

Promising review: "Super soft and comfortable panties, I wish I would have bought more." —Ecole from Lafayette, In

Get them from Victoria's Secret for $35 (originally $45; available in sizes XS–XXL and 19 dateless color combinations). 

Promising review: "These seamless thongs are seriously a game changer. Super comfy, no lines showing through leggings or tight clothes, and it doesn’t ride up. The material feels soft and lightweight, almost like you’re not wearing anything."   —Alex Morales

Get them from Amazon for $12.99+ (available in sizes XS–XXL and six colors).

Promising review: "So, so soft and stretchy. Love the pattern. Hope they have more prints so I can buy more. :)"  —M

Get it from Target for $6.80 (originally $8; available in sizes XS–XL and in blue).

Promising review: "Very soft and comfortable, and I wash these like I do with my other clothes, and they are fine, long-lasting, and made well, thick and lightweight, and beautiful colors." —Britt333

Get a pack of six from Amazon for $16.99+ (available in sizes XS–3XL and 16 color combinations).

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The reviews for this post have been edited for length and clarity.