Anti-Chafing Black Underwear | Long 15" Inseam Black Shorts

Long Anti Thigh Chafing Underwear 15" Length (Black)

Size Guide

New Style! Undersummers 15" Length

It's the details that make the Undersummers difference:

  • SEAM-FREE INNER THIGH offers superior thigh protection
  • STAY-PUT LEG keeps your legs protected during activity
  • Perfect to wear for sleep or for layering under a favorite dress
  • Long 15" Inseam
  • Seamless front thigh
  • Soft, silky fabric lets legs and clothes glide
  • Lightweight, cool, breathable, moisture -wicking fabric
  • Cotton liner makes this a single layer solution
  • Stretchy, comfy fit.  Absolutely Not Shapewear.  Non-Compression fit.
  • 96% Polyester/ 4% Spandex, exclusive of trims, cotton gusset
  • Machine wash cold, line dry
  • Assembled in the USA of Imported Fabrics (Korea)
  • *These Shortlettes are made to be worn as underwear.  They are too thin & sheer to wear alone as leggings.

Type: Extra Long Shortlette

Customer Reviews
4.3 Based on 37 Reviews
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United States United States

Love these


United States United States

Good base layer

I am overall happy with the Long Anti Thigh Chafing Underwear 15" Length (Black). I would have given 5 stars if it were either a little longer to fall just below the knee as pictured, or 1.5" shorter to fall just above the knee. I am 5'7" and this length hits me right across the knee, so I feel the seam moving across the front and back of the knee when I walk, etc. So, not quite like wearing nothing at all!

Sonja S.
United States United States

Top rolled

I wore these and the top would not stay up. Thank heavens I was wearing a loose fitting dress. So I hope it wasn’t noticed

Jandina K.
United States United States

Sad girl in the Hills

Unfortunately I bought the wrong size. 2X when I should have bought the XL. I put them on the work outside doing yard work. They kept falling down and I’m sure I looked a sight. Lucky for me I live out in the woods so no one saw me. Sadly I cannot return them since I had worn them. Will donate them to a second hand store.

United States United States

Smooth all over

These are the perfect length. There is nothing binding anywhere, not in the waist or the leg. I told a nurse in my doctor's office about them today. Her eyes lit up when I mentioned that all your products put an end to thigh-chafe.

United States United States


These garments are perfect to wear under dresses without the added bulk like bike shorts.

United States United States


Fantastic!!! It's very comfortable and no more hassles with using a slip.

Lisa B.

Love them! Exactly what I

Love them! Exactly what I needed to wear under skirts.

Stephanie B.

Love the under summers.

Love the under summers.

Flesia N.

The underwear fit good. They

The underwear fit good. They were what I expected.

Diane E.

These were the most comfortable

These were the most comfortable thing I have ever worn under a dress, I love, love them!!

Julianne E.

I really wanted to love

I really wanted to love these but there are seams on the back of the legs that are really uncomfortable. They were itchy and the waistband is visible underneath my clothes.

Julia S.

Love these! I live in

Love these! I live in Arizona and it is super hot. These shorts do not add any heat at all! Wish they made a capri length with lace. More colors, too, please!

Cheryl C.

These are wonderful. The only

These are wonderful. The only reason I didn't give it a 5 is that I like the waist on the regular fusion shortlet best. Your products are the bomb! Thank you!

Naomi S.

like having a slightly longer

like having a slightly longer length

Ruthann C.

This is so nice and

This is so nice and comfortable that I ordered a second pair. It’s nice to have the security and coverage of pants with the nice slick surface that dresses don’t cling to.

We recommend ordering based on your measurements
 Size (USA) Waist (in) Hip (in)
Small 30-31 37-38
Medium 32-33 39-41
Large 34-36 42-45
X-Large (1X) 37-38 46-49
2X 39-42 50-53
3X 44-48 54-57
4X 49-53 58-61
5X 54-58 62-66
 Size (USA) Waist (cm) Hip (cm)
Small 76-79 93-97
Medium 81-84 99-104
Large 86-91 106-114
X-Large (1X) 93-96 116-124
2X 99-107 127-134
3X 112-122 137-144
4X 124-134 147-154
5X* Fusion only 137-147 157-163


Shortlettes are generously sized  to hug but not squeeze your curves.  They are not compression and do not feel like nylons/hosiery, shapewear, bike shorts, or compression pants.  Shortlettes are simply comfortable.  They are not made to be tight, feel constricting, shape, pinch, or bind.  The longer lengths allows for maximum chafe protection and comfort.

Correct Fit Guidelines:
✔️ Waist should not roll
✔️ Body should glide comfortably against the skin
✔️ Legs should not ride up while walking

Signs of Incorrect Fit:
✖️ Baggy crotch (too big)
✖️ Running at the seams/Wears to fast (too small)
✖️ Slides Down (too small)
✖️ Legs ride up (too small)

Which is the best fit?

CarrieRae's Recommendations:

Under 5'4" - High Thigh, Athletic, or Classic Styles

Plus Size - Fusion, Classic, or Original Lace

Apple Shaped - Fusion, Classic, or Original Lace

* Order the size in-between your waist and hip measurement.  I.e.  Waist 3X + Hip XL = Order 2X

Pear Shaped - Try them all!

Hourglass - Lace or High Thigh

Slender - High Thigh or Athletic

My Shortlettes fall down, why? Are Shortlettes shape wear? Are they compression shorts?
How are Shortlettes different than other slip shorts or bike shorts? How long do Undersummers products last? Can you let your Shortlettes Show?

Contact Us:  Do you have a question that is not answered here?  Email us at and we will respond within 1 business day. 

updated 6/22/20