ThirdLove Underwear Review

In partnership with ThirdLove

About ThirdLove

ThirdLove Underwear Review

Founded in 2013 by Heidi Zak and Ra’el Cohen, ThirdLove has established itself as a prominent player in the intimates industry, celebrated for its groundbreaking approach to undergarment design and dedication to inclusivity. 

ThirdLove prioritizes the comfort and fit of its products. The brand’s Fitting Room is an online quiz that helps customers discover their ideal bra size, ensuring a personalized shopping experience.

Additionally, the brand’s commitment to quality is evident in its use of eco-friendly, premium materials and features such as memory foam cups, tagless labels, and adjustable straps. 

By fostering body positivity and challenging conventional beauty standards through its marketing campaigns, ThirdLove has cultivated a devoted customer base, making it a go-to choice for those seeking comfortable, stylish, and inclusive intimates options.

Up ahead in this ThirdLove underwear review, I will go through some of the brand’s most popular options, some customer feedback, policies, promotions, and more, to help you decide if it’s worth checking out. First, let’s start with a quick list of highlights. 


  • Wide range of stylish women’s undergarments
  • Inclusive brand
  • Commitment to sustainability
  • Online Fitting Room tool and option to chat with experts 
  • Lots of resources on undergarment fit and sizing 
  • Positive customer reviews about comfort and fit
  • Generous 60-day return policy with free returns

Why You Should Trust Us

Our mission is to help you make better, more informed purchase decisions. 

Our team spends hours researching, consulting with medical experts, gathering insight from expert professionals, reviewing customer feedback, and analyzing products to provide you with the information you need.


ThirdLove Underwear Review

ThirdLove uses a variety of materials in their intimates and undergarment products. These materials are chosen for their quality, comfort, and performance. While specific materials may vary from one product to another, here are some common materials used by the brand:

  • Microfiber: Microfiber is a synthetic fabric known for its softness, moisture-wicking properties, and durability. It is often used in bras and underwear for its comfort.
  • Lace: Lace is a delicate, decorative fabric commonly used in intimates for its aesthetic appeal. It can be both decorative and functional, providing a feminine touch to their products. ThirdLove’s lace is soft and doesn’t cause any irritation.
  • Organic Cotton: Organic cotton is commonly used in underwear and other garments for its softness and moisture-absorbing qualities. Almost all of ThirdLove’s 24/7® styles are made with sustainable OEKO-TEX® certified fabric. The organic cotton in the Organic Cloud Cotton is OCS certified.
  • Spandex: Spandex, also known as elastane, is a stretchy synthetic fiber used to provide elasticity and flexibility in undergarments, ensuring a snug fit.
  • Mesh: Mesh fabrics are often used for their breathability and a touch of sheer elegance in intimates designs.
  • Elastic: Elastic bands are used in the waistbands and straps of underwear and bras to provide support and a secure fit.


ThirdLove Underwear Review

ThirdLove is known for its commitment to inclusive sizing, with over 60 sizes including half cups to accommodate a diverse customer base.

While specific size offerings may vary depending on the product and collection, their underwear generally falls between XS to 3X. The brand has also listed size charts for different categories of their underwear, as well as bra fitting guides. 

To find your exact size with ThirdLove, you can use their Fitting Room Quiz, which is available on their website. You can also consult with their Fit Stylists—helpful and knowledgeable experts who are ready to answer any questions you may have.

Lastly, it’s always a good idea to check out individual product reviews from customers to see if you might need to size up or down with certain designs.

3 ThirdLove Underwear Bestsellers 

If you’ve made it this far into my ThirdLove underwear review, you must be wondering what the undergarments actually look like. For this next segment, I decided to focus on styles from three bestselling collections: Organic Cloud Cotton, ComfortStretch, and 24/7®.

If you love what you see or you want to explore more styles, I encourage browsing the full collections on ThirdLove’s website. They also offer a Bundle & Save option if you want to stock up for the year.

ThirdLove Organic Cloud Cotton Hipster

ThirdLove Underwear Review

ThirdLove’s Organic Cloud Cotton collection boasts a trio of styles: hipsters, briefs, and thongs. Made from breathable organic cotton with an ideal amount of stretch, these undergarments deliver a soft, comfortable fit under your favorite outfits.

Let’s take a look at the Organic Cloud Cotton Hipster, shall we? It showcases soft touch elastics, a 100% cotton lining, and a label free of any irritating tags. This wardrobe provides moderate coverage, maintaining a mid-rise profile and true-to-size dimensions.

The Organic Cloud Cotton Hipster is priced at $22. Choose from four classic nude colors, available in sizes XS to 3X (XL and 3X are currently sold out, but you can sign up to be notified when they’re back on the shelf).

Customers say: “Usually panties that feel this sheer just roll down my very round belly and try to work their way down my legs. THESE DON’T! Very comfortable and well behaved.

ThirdLove ComfortStretch Bikini

ThirdLove Underwear Review

Within ThirdLove’s ComfortStretch collection, you’ll find bikinis, briefs, and thongs.

Indulge in the ComfortStretch Bikini, tailored from an exclusive 4-way stretch fabric to provide the perfect fit for your unique shape. Free from seams and elastic, this bikini ensures a smooth touch against your skin.

With ] zero-edge, bonded waist and leg openings that hug your curves when worn, this bikini delivers an exceptional level of wedgie-proof comfort. Combined with a peachy-soft fabric, these may quickly become your go-to ‘barely there’ panties.

It comes in dreamy shades like mocha, taupe, sienna, and three other nudes. Available in sizes XS to 3X, the ComfortStretch Bikini is a delightful addition to your intimates collection for just $20.

Customers say: “Perfect every-day underwear with amazing comfort. Great quality as well, and flattering! I’m a big girl and the XL hides my little pooch and I love how it feels and looks seamless.”

ThirdLove 24/7® High Waist Thong 3 Pack

ThirdLove Underwear Review

Part of the 24/7® collection which covers hipsters, thongs, and briefs, the ThirdLove 24/7® High Waist Thong 3 Pack can be matched with their beloved 24/7® bras as well. As the name suggests, it includes three pairs of thongs made for all day, everyday comfort..

Made from lightweight microfiber and featuring a breathable cotton gusset, these are cool to the touch and great for all seasons. With their no-roll, flat finish waist & legs design, you don’t have to worry about them slipping all over the place either.

ThirdLove carries this must-have pack in sizes XS to 3X, for $39. The set contains all three colors: black, taupe, and mocha.

Customers say: “This is my first high waisted thong and I’m in love – it hits my body in such a comfy spot, and the material is also super stretchy and doesn’t cut in at ALL.” 

Who Is ThirdLove For? 

ThirdLove Underwear Review

ThirdLove is designed for women of all body shapes and sizes who value comfort, quality, and inclusivity in their intimates choices. With an extensive range of sizes, innovative fit tools, and a commitment to body positivity, ThirdLove caters to those who seek well-fitting and stylish underwear and are looking for a brand that celebrates diversity and prioritizes comfort. 

ThirdLove Reviews: What Do Customers Think?

ThirdLove Underwear Review

Many of ThirdLove’s products have received thousands of reviews and features in various publications. To paint a full picture of the brand, I gathered ThirdLove underwear reviews from all over the web to see what people were saying about their purchases (compiled as of October, 2023). 

To start off, here are the ratings for some hot picks from the three collections I mentioned previously, as well as some picks from other categories: 

  • Organic Cloud Cotton Hipster: 4.6/ 5 stars from 140 reviews
  • Comfort Stretch Bikini: 4.5/ 5 stars from 281 reviews
  • 24/7® Classic T-Shirt Bra: 4.5/ 5 stars from 56,581 reviews 
  • 24/7® Brief 3 Pack (new style!): 5/5 stars from 9 reviews
  • Comfort Stretch Cami: 4.4/5 stars from 271 reviews 
  • Lace Back Cheeky: 4.7/5 stars from 1,250 reviews
  • Kinetic Adjustable Sports Bra: 4.5/5 stars from 1,856 reviews 

Here’s some helpful feedback that commenters have shared regarding size, fit, comfort, and more: 

One person wrote about the Organic Cloud Cotton Hipster: “It’s very soft and comfy! I chose the size which I’m used to purchased from here and it fits well. Love the cotton fabric. Going to stock up more to rotate my drawer!”

“I ordered all 3 colors [of the Comfort Stretch Cami] in size S, basing my decision on the reviews. I’m about 156 lbs (ish), and a 34DD (34F in ThirdLove), and the smalls were snug, but in the best way!! I definitely didn’t want to return them or exchange them, but I knew I wanted more, SO – I went back and got all 3 colors again in M. Not a line, not a bulge, no rolling up…More colors, to wear underneath work shirts for a ‘pop’ of color please!!” 

“I’m a fan of this style pantie and the Form Seamless Shortie is one of the best I’ve tried. I especially like the weight of the fabric — not as flimsy as a lot of the others so they hold their shape nicely as well as hold up after numerous washings.” 

“Surprisingly comfortable. Yes, some might call [the Lace High Briefs] Granny panties, if your granny was a 1940s starlet. Little baby pooch disguised. Perfect under the trendy high rise pants!” 

All in all, ThirdLove underwear reviews are overwhelmingly positive, with customers praising how the undergarments made them feel sexy, didn’t ride up throughout the day, felt silky smooth, and that they quickly became wardrobe staples. A few users left comments suggesting that the brand could offer more colors.

Is ThirdLove Worth It?

ThirdLove Underwear Review

It’s time to start wrapping up this ThirdLove underwear review with a final verdict—if you value a wide range of sizes, personalized fit recommendations, and high-quality intimates, ThirdLove is definitely worth it.

The brand is known for its inclusive sizing, innovative fit tools, and commitment to quality. The price might be a bit high for some, but as you might’ve seen in the previous segment as well, a large volume of customers have left glowing testimonials for their undergarments. 

ThirdLove Promotions & Discounts 

ThirdLove Underwear Review

At the time of writing this ThirdLove underwear review, you can save up to 20% by signing up for SMS and emails—along with a chance to win a $500 gift card

You can also take $15 off your first order, get $25 off by referring a friend, and take advantage of their student discount if you are in school.

Also, ThirdLove has a fantastic offer to save on bras: Buy 2, save $10; Buy 3, save $40; Buy 4, save $60. You can take the opportunity to renew your bra collection and still save money!

Lastly, the brand offers an Everyday Heroes discount to veterans, medical professionals, first responders, teachers, and anyone in the military. 

Where To Buy ThirdLove

ThirdLove Underwear Review

You can purchase items from ThirdLove’s entire collection on the brand’s website.


ThirdLove Underwear Review

Who owns ThirdLove?

While doing my research for this ThirdLove review, I discovered that it is a privately held company co-founded by Heidi Zak and Ra’el Cohen. Heidi Zak serves as the CEO of the company, and Ra’el Cohen is the Chief Creative Officer. 

Where does ThirdLove ship to?

ThirdLove currently only ships across the United States and Canada

What is ThirdLove’s Shipping Policy?

ThirdLove offers free shipping on US orders over $100. Once you place an order, you can easily track its progress. Tracking information is sent to your email or can be accessed in your online account. Packages are processed and shipped on weekdays, excluding holidays.

For standard orders (7-10 business days), you can expect up to 2 business days for tracking updates. Express orders placed before 10:30 AM Pacific Time on weekdays ship the same day.

Shipping options include:

  • Standard Shipping (7-10 Business Days) for $6 or free on orders over $100.
  • Priority Shipping (3-4 Business Days) for $17.
  • Express Shipping (1-2 Business Days) for $25.

Delivery times may vary for Hawaii, Alaska, APO/FPO destinations, and Canada. For changes or cancellations, there’s a 50-minute grace period during business hours. Afterward, you can use the free returns and exchanges option.

What is ThirdLove’s Returns Policy?

ThirdLove provides a 100% Fit Guarantee, allowing customers to send back items within 60 days from the date of purchase.

Returns are typically accepted for unworn and unwashed items with all original tags and packaging intact. To initiate a return, you can request a return label through the website by filling in your email and order number here

How To Contact ThirdLove

I hope you enjoyed reading this ThirdLove review! Get in touch with the brand via the following channels: 

  • Phone: (415) 692-0089
  • Email: [email protected] 
  • Online contact form 
  • Live Chat on the website 

It is always good to have options. Here are a few other undergarment brands to choose from:

Bombas Underwear Review

Negative Underwear Review

Eby Underwear Review

Knickey Underwear Review

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