Anti-Thigh Chafing Long Underwear Shorts - Lilac | Undersummers

Long Anti Thigh Chafing Underwear 15" Length (Lilac) Final Sale Clearance

Size Guide

New Style! Undersummers 15" Length

It's the details in these anti-thigh chafing long underwear shorts 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
  • 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
4.4 Based on 13 Reviews
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United States United States

Great product

I have bought 4 pairs of these shorts and love everyone of them.

United States United States

Better than pajamas

I love the 15" Undersummers for sleeping. No pinching, twisting or bunching, just comfortable!

United States United States

Absolutely perfect

Comfortable, non- bonding, cool - love them!!!!

United States United States

Disappointed with Customer Service

The package I received was missing 3 out of the 4 items I purchased. The package had obviously been tampered with during delivery. I contacted customer service and was told to file a claim with the post office, which I did. I have received no response from the post office regarding my claim. I contacted customer service again for help getting replacement items or a refund and received no follow up response.

United States United States

Long Anti Thigh Chafing Underwear 15"

These don't have any spandex at the waist to hold them up. They fall down easily.

Julie P.
United States United States

Good product

They run a little bigger then i thought but they are good at keeping the friction down and reducing the sweating

United States United States

Lovely lavender

I love the longer length! Gives me extra confidence wearing shorter dresses. No worry of embarrassing wind gusts.

United States United States

Love these

I cant say enough how happi I was with my purchase. The color is amazing. The quality is fantastic! Only thing they were to big! I ordered a larger size thinking they run small well boy was I wrong!Now I need to reorder!

Ann M.
United States United States

Crazy over my lilac long length

I am wowed by this beautiful soft fabric and gorgeous shade of lilac. I feel gorgeous wearing these. Try them for a super treat!

United States United States

Love the length!

I love the feel and length of these! So comfortable. Wish there was a dark blue, too. I need more colors.

United States United States

Extremely comfortable

I love everything I have bought and wear them each week with summer dresses.

Mary K.
United States United States


Wearing Undersummers shortlettes has stopped my thighs from chafing and allowed my skin to heal. I wear them over my cotton underpants and they are so comfortable. It amazes me how the material feels so silky and does not snag. I have tried different lengths and this 15" length is my favorite. If you add pockets they'll be even better!

Flesia N.
United States United States

15” Lilac underwear

Very pleased with product, and color. I must have lost weight since my last order as they were a little loose in waist, but still comfort. Since I have to be in they are great for lounging in with a big sleep shirt.

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