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 6 reviews
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
6 reviews
  • LM
    Lauren M.
    Verified Reviewer
    I recommend this product
    What is your usual underwear size? XS
    Size Purchased XS
    Style(s) Purchased Thong, Bikini, High-waisted Bikini
    Rated 5 out of 5 stars
    6 days ago
    Love love love!!!!

    This brand has become my go-to underwear of choice, I always find myself reaching for my Adelfi as compared to the other brands I own.

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • DC
    Diana C.
    Verified Buyer
    I recommend this product
    Size Purchased L
    Style(s) Purchased Bikini
    Rated 5 out of 5 stars
    4 months ago
    5 Stars

    Loved it!!!

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • DG
    Demi G.
    Verified Buyer
    I recommend this product
    Size Purchased M
    Style(s) Purchased Thong, Bikini, High-waisted Bikini
    Rated 5 out of 5 stars
    4 months ago
    5 Stars

    FABRIC! It felt so high quality and not too thin. I literally had a skims order show up the same day (ordered the very high maternity pairs that go over the belly) and the material from skims felt sooooo cheap in comparison. Loved that the label was printed inside.

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • LT
    Laura T.
    Verified Buyer
    I recommend this product
    Size Purchased M
    Style(s) Purchased Thong, Bikini, High-waisted Bikini
    Rated 5 out of 5 stars
    4 months ago
    5 Stars

    I just have to say, this is hands down the most comfortable underwear I’ve ever worn! The material is unbelievably soft, I completely forgot I had them on. I tried a few styles, and every single one was a 10/10. I usually prefer thongs, but her bikini style might be a total game changer for me, it’s so flattering! And the gusset is just the perfect size; no shifting, no awkward lines. I’m absolutely obsessed!

    Fit AdviceRated 0.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5
  • HG
    Heather G.
    Verified Buyer
    I recommend this product
    Style(s) Purchased Thong, Bikini, High-waisted Bikini
    Rated 5 out of 5 stars
    4 months ago
    5 Stars

    As a plus sized woman experiencing my first pregnancy, finding comfortable underwear has been hard. Every style I've tried from Adelfi was so soft, supportive, and fit amazing on my body! I've been used to sizing up in pregnancy but my normal size XL still fit great even though I was expecting to be in between sizes right now. I wouldn't say it was "wrong" but the sizing seems generous, in a way that im sure a lot of pregnant women who have had to size up in normal apparel will appreciate.

    Fit AdviceRated 2.0 on a scale of minus 2 to 2
    ComfortRated 5.0 on a scale of 1 to 5