Our Ultimate Picks for the Best Seamless Underwear We’ve Tried

Top Choice Overall

With its softness, stretch, light “barely there” sensation, and perfect fit, the Bombas Women’s No-Show Hipster takes the top spot as the best seamless underwear. Made from a mix of nylon, elastane, and cotton, these undies are incredibly soft, breathable, and lightweight.

Unlike some seamless underwear that tends to ride up or bunch during wear, this pair stays securely in place, offering a snug fit around the hips and buttocks. Our testers love the truly seamless design and high-quality material. After multiple washes, the fabric and shape remained intact, and when worn under form-fitting clothes like leggings and dresses, no underwear lines were visible.

Available in five classic colors, including timeless black and neutral shades like pecan, these are perfect for everyday wear or under sheer or tight-fitting dresses. In addition to these essential hues, the underwear comes in sizes XS to 2X. However, we found that they tend to run slightly large. If you're between sizes or prefer a tighter fit, we suggest opting for a smaller size.

Size Range: XS–2X | Material: Nylon, elastane, cotton | Color Options: 5

Best No-Slip Option

The b.tempt’d By Wacoal Comfort Intended Hipster carried us through an entire workday and an after-work Pilates class. For this reason, it earns our top recommendation for the best no-slip seamless underwear. We were pleased to find there were no visible lines and the underwear stayed put without shifting, unlike some other seamless options we’ve tried.

Crafted from a blend of nylon, cotton, and spandex, this pair is incredibly soft, stretchy, and snug, without digging into your skin. It fits comfortably around the body and stays in place, even if you have a curvier figure—something many seamless options struggle with, especially for those with fuller hips and behinds.

With seven stunning shades, including vibrant watermelon and neutral tones like au natural, this underwear is a fun way to add variety to your collection. However, it's not machine washable, which can be inconvenient for busy individuals or those who prefer not to hand wash their garments. The fabric is of medium weight, which may be too thick for those seeking a lighter, “barely there” sensation.

Size Range: S–XL | Material: Nylon, cotton, spandex | Color Options: 7

Best Briefs

Made from 100% mercerized cotton, the Hanro Cotton Seamless Full Brief offers exceptional softness, breathability, and lightness. Even though it’s made from a less flexible material compared to spandex or elastane, we were impressed by how stretchy it is without feeling restrictive.

Although there is a tag at the back, it doesn’t dig into the skin, so you still experience that desired 'barely there' sensation. The fabric held its shape beautifully, showing no signs of fraying or pilling even after extensive wear and multiple machine washes.

Offered in 12 shades, including vibrant tones like porcelain rose and classic nudes such as beige, this underwear is perfect for brightening up a dull lingerie collection. However, it's not entirely seamless, and we did notice some faint lines peeking through clothing at times.

Additionally, these underwear tend to run large, so it's advisable to size down for a more secure fit that stays in place throughout the day. At $50 per pair, it also may not be the most budget-friendly option for those looking to save.

Size Range: XS–XL | Material: 100% cotton | Color Options: 12

Best Full Coverage

The Harper Wilde No-Show Hiphugger is our top pick for best full coverage due to its excellent fit around the hips and butt, while still feeling nearly invisible under clothing. Despite featuring a seam down the center back, it aligns perfectly with the stitching of most leggings and pants, making it undetectable when worn underneath.

Crafted from a blend of nylon, spandex, and cotton, this pair offers excellent stretch without digging into the skin. The lightweight fabric is also of high quality and maintained its shape impressively throughout the testing period.

Offered in three timeless colors—beige, tan, and black—this underwear is perfect for those seeking a classic, seamless everyday option. Although it fits true-to-size, some users reported that it occasionally rode up and caused wedgies, with one tester mentioning that it rolled down under a skirt because it lacks any waistband. However, it stayed in place under pants with a waistband.

Size Range: XS–3XL | Material: Nylon, spandex, cotton | Available Colors: 3

Best Low-Rise

The Jockey Seamfree Chill Bikini is an ideal choice for those seeking a low-rise seamless underwear that stays in place all day. The sizing is accurate, which is often a challenge with seamless underwear that tends to run large.

Additionally, the fabric is of high quality and feels comfortable against the skin, despite being thicker than other seamless options. Composed of nylon, cotton, and spandex, it's incredibly stretchy, soft, and breathable.

Available in sizes S to 2X and four timeless colors, this underwear is perfect for those seeking moderate coverage, moisture-wicking properties, and a barely-there sensation. While the fabric is lightweight and breathable, it isn't entirely seamless, and we noticed visible panty lines under leggings.

Size Range: S–2X | Material: Nylon, cotton, spandex | Color Options: 4

Best High-Rise

For a high-waisted seamless option with exceptional coverage, consider the Wacoal B-Smooth Seamless Hi-Cut. This pair is incredibly comfortable, fits snugly, and shapes the hips and butt while providing a “barely there” feel.

Composed of 7% spandex, this pair is perfect if you're seeking seamless underwear that will contour the body beneath jeans and form-fitting attire. They're lightweight, durable, and mostly invisible under clothing, though you may want to exercise caution when wearing them under leggings.

With a broad size range (S to 5X) and 17 color options, this underwear is suited for various body types and those looking to refresh their underwear collection. However, sizing runs small, so it’s advisable to size up for a more comfortable fit and to avoid uncomfortable digging.

Size Range: S–5X | Material: Nylon, cotton, spandex | Color Options: 17

Best Plus-Size

Boasting a broad size range from XS to 4X, the Knix Essential No-Show French Cut claims our top spot for the best plus-size-friendly seamless underwear. The fabric is incredibly smooth and soft, offering a “barely there” sensation, and has no edges that could pinch or dig into the skin.

This underwear provides a lot of stretch while still shaping the body with medium coverage, particularly sculpting the hips in a way reminiscent of Spanx. Despite being lightweight, it remains durable and holds up well, showing no signs of wear like rips or pilling during testing.

Offered in just two colors—warm sand and black—this underwear is perfect for those seeking a versatile, everyday seamless option that works from office hours to gym sessions. However, while mostly seamless, we did notice a slight seam under a pair of tight leggings.

While this pair is very comfortable under pants, it did tend to ride up and bunch after a long day of movement, and unfortunately rolled down when worn with a dress.

Size Range: XS–4X | Material: Nylon, cotton, spandex, carbon, lycra | Color Options: 2

Final Thoughts

Our top overall choice is the Bombas Women’s No-Show Hipster because of its softness, stretch, velvety grip that stays in place, and the “barely there” sensation. These qualities ensure this pair remains comfortable, stays in place, and keeps its shape even after multiple wears and washes. If you prefer more coverage, we also recommend the Harper Wilde No-Show Hiphugger, which offers excellent stretch and full coverage of the hips and butt while maintaining a seamless look under tight clothing.

Our Evaluation Method

To identify the best seamless underwear, we tested several styles and options over a two-week period, evaluating them based on comfort, fit, quality, and overall value. We began by examining the comfort of each, taking note of factors like softness, stretch, and feel.

We then focused on testing the fit of each pair, considering sizing (whether it ran small, large, or true-to-size), shaping (how well the underwear molded to the body), and wear (whether it shifted or rode up during use). We also checked the seamlessness, noting any visible stitching or edges under clothing.

Lastly, we assessed the quality of each option, taking into account the fabric weight (whether it felt light or heavy), how well the underwear maintained its shape throughout the testing, and any issues like ripping, stretching, pilling, or fraying after two weeks of wear, washing, and drying. We also considered its retail price to evaluate overall value.

Mastering the Art of Shopping for Seamless Underwear

Fabric Choices

Seamless underwear is usually crafted from soft, breathable, and lightweight fabrics like elastane, nylon, and spandex. These materials are known for their excellent stretch and recovery, contouring to the body’s shape while being comfortable, easy to wash, and long-lasting. According to Noa Arias and Dr. Shaula Alexander Yemini, the co-founders of Bloomers Intimates, they’re an ideal choice for comfort and durability. 

Other fabrics commonly used for seamless underwear include polyester, modal, and cotton. While cotton offers comfort and breathability, it has limited stretch and lacks recovery, which often necessitates more seams to fit the body properly, explain Arias and Dr. Yemini.

Regardless of the fabric used, it's crucial to choose a lightweight material that regains its shape after stretching, advises Arianna Levin, VP of Design at Adore Me. “This ensures it won't lose its form or become saggy after prolonged wear,” she adds. The ideal seamless underwear should stretch comfortably but maintain its shape for enduring wear.

Cut

Every style on our list offers unique support and coverage, with the perfect choice depending on your body shape, lifestyle, personal tastes, and the event you’re dressing for.

For the most discreet option, a thong is your best bet, no matter your body shape, though it may not suit everyone,” explains Miryha Fantegrossi, design chief at Wacoal. If comfort and support are your priorities, opt for a high-waisted, full-coverage seamless pair, as “they stay in place and gently smooth your figure,” according to Arias and Dr. Yemini.

Briefs, hipsters, and boyshorts are other popular styles that typically fit comfortably over the cheeks without shifting or causing discomfort, especially for those with curvier builds, says Levin. On the other hand, bikinis are ideal for women with a slightly curved hip and shapely thighs, as the leg opening’s arch provides a more comfortable fit,” Fantegrossi notes.

Your body shape and comfort preferences are important, but your lifestyle is equally significant when choosing the best seamless underwear. For instance, if you’re active, “it’s crucial that your underwear is exceptionally comfortable, stays in place, and doesn’t pinch,” say Arias and Dr. Yemini. Therefore, you may prefer briefs or boyshorts over thongs or low-rise bikinis.

However, if you're donning a form-fitting dress for a cocktail event, you'll definitely want to opt for high-waisted seamless underwear to avoid any waistband marks cutting into your abdomen or creating visible panty lines, note Arias and Dr. Yemini.

Size

The sizing for seamless underwear generally mirrors that of regular underwear, but it can vary by brand. It's advisable to refer to the size chart on a brand's website to make an informed choice, suggest Arias and Dr. Yemini.

If you're loyal to a specific underwear brand, you can typically order your usual size when selecting seamless styles, Levin notes, as sizing usually remains consistent. “Since seamless underwear is more elastic, it tends to be a little more forgiving,” say Arias and Dr. Yemini, so if there's any discrepancy, you can usually downsize with confidence.

Questions You Might Ask

How do seamless and no-show underwear differ?

Although you may come across both the “seamless” and “no-show” labels during your search for seamless underwear, there's essentially no distinction between the two terms. Brands often use them interchangeably to describe the same type of underwear.

Both seamless and no-show underwear are designed to have “no visible seams or edges along the leg openings, creating a seamless transition from the undergarment to the body,” explains Levin. This ensures that clothes glide smoothly over the underwear, providing a flawless finish and giving the illusion that you're not wearing any at all.

What are the top choices for the most comfortable seamless underwear?

While our top recommendation—Bombas Women’s No Show Hipster—stands as our pick for the most comfortable seamless underwear due to its luxuriously soft fabric and exceptional fit, ultimately, comfort is subjective. As Levin points out, "It’s like shopping for jeans—you have to discover the brand that suits you best."

Trust Our Expertise

This article was penned by Naydeline Mejia, a contributing writer for Mytour who brings over five years of expertise in crafting product reviews and lifestyle articles. In curating this list, we tested a variety of seamless underwear styles and assessed them based on their comfort, fit, quality, and overall value. 

For expert insights into how to shop for seamless underwear, we consulted with several lingerie professionals and designers—including Noa Arias and Dr. Shaula Alexander Yemini, co-founders of Bloomers Intimates, Miryha Fantegrossi, head of design at Wacoal, and Arianna Levin, vice president of design at Adore Me.