woman wearing a black pair of sustainable non toxic underwear

A gusset worth talking about

Our gusset is 31% wider than the industry standard†

Fuller coverage, better fit, and intentional support where it counts.

side-by-side comparison of flimsy underwear gussets vs. Adelfi underwear gusset

Front wedgies? We don't know her.

Adelfi's underwear is sewn down to stay put

Our designs have built in support that sits flat and doesn't shift or bunch.

Stay cool & dry

We craft our underwear gussets with 100% cotton — the #1 fabric recommended by gynecologists†

Your most intimate area deserves the best. Breathable, absorbent, and gentle on sensitive skin.

Our fabric standards

OEKO-TEX® Certified Fabrics

Tested for 350+ harmful substances and free from PFAS, toxic dyes, and chemicals that disrupt your body’s natural hormone balance.

Lenzing TENCEL™ Modal

Made from sustainably sourced beechwood and produced in a closed loop system that reuses 99% of water and solvents.

Ethical & Small-Batch Production

Created in small batches with BSCI certified partners to minimize overstock and reduce waste.

OUR GIRLS KNOW BEST

Love Notes

5.0
Rated 5.0 out of 5 stars
Based on 31 reviews
100%would recommend this product
Slide 1 selected
31 reviews
  • JL
    Jessica L.
    Verified Buyer
    I recommend this product
    Usual underwear size M, S
    Usual pants size 6
    Height? 5' 6"
    Body type Athletic
    Common underwear frustrations Itchy/irritating fabric, Too narrow/uncomfortable gusset
    Size Purchased M
    Style(s) Purchased Thong
    Rated 5 out of 5 stars
    1 month ago
    Perfect fit!

    I love everything about this thong! The color, the fit, and of course the comfortable fabric! I ordered a M and it’s a perfect fit.

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • AB
    Alexis B.
    Verified Buyer
    I recommend this product
    Usual underwear size S
    Usual pants size 2
    Height? 5' 4"
    Body type Hourglass
    Common underwear frustrations Overpriced, Front wedgies (cameltoe)
    Size Purchased M
    Style(s) Purchased Thong
    Rated 5 out of 5 stars
    2 days ago
    So comfortable!!

    These panties are so comfortable! The fabric is incredibly soft and stretchy, and they feel great on. They have just the right amount of stretch without feeling tight or restrictive, and they stay comfortable throughout the day. Highly recommend!

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • MW
    Meghan W.
    Verified Buyer
    I recommend this product
    Usual underwear size L
    Usual pants size 10
    Body type Hourglass
    Common underwear frustrations Front wedgies (cameltoe), Too narrow/uncomfortable gusset
    Size Purchased L
    Style(s) Purchased Thong
    Rated 5 out of 5 stars
    1 week ago
    OBSESSED

    I wish all my undies were this brand! Will def be purchasing more asap

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • BW
    Brea W.
    Verified Buyer
    I recommend this product
    Usual underwear size S
    Usual pants size 4
    Height? 5' 0"
    Body type Athletic
    Common underwear frustrations Rolling down/doesn't stay in place
    Size Purchased S
    Style(s) Purchased Thong
    Rated 5 out of 5 stars
    1 week ago
    10/10

    So much more comfortable than my expensive VS underwear!!

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • FD
    Frankie d.
    Verified Buyer
    I recommend this product
    Usual underwear size S
    Usual pants size 4
    Height? 5' 5"
    Body type Athletic
    Common underwear frustrations Overpriced
    Size Purchased S
    Style(s) Purchased Thong
    Rated 5 out of 5 stars
    2 weeks ago
    LOVE

    Best!!! Love them. So soft and buttery.

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5