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

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

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
4.4 Based on 50 Reviews
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United States United States

Very functional

These have many uses, not just under dresses. I wish the company would make more options of longer lengths available.

Lynn R.
United States United States


Feels like I'm not wearing anything. Soft and comfortable. Probably should have bought one size smaller but, they don't fall down. Love them. L.R., CT

Holley M.
United States United States


I have so many different pair of Undersummers but these are a FAVE! They’re so soft and thin and keep me cooler than wearing nothing! I like this length under my jumpsuits and long dresses.

Undersummers by CarrieRae Long Anti Thigh Chafing Underwear 15 Length (Black) Final Sale Clearance Review
United States United States

Love em!

Love the longer length. These are so much more comfortable than the 9". No pulling or straitening the leg.

United States United States

Amazing quality

I actually gave them as a gift to my niece. SHE LOVES THEM!!!!

United States United States

Good Thigh Protection

I love that this company is based in Kingwood, TX; she knows it gets really hot here because this product offers chub rub protection without making you hot. The 15 inch doesn't ride up with movement (I do HIIT workouts in mine), and the waist band lays flat. These do run a little big: I ordered a xl/2xl but I would have been good with a size smaller. The fabric is not bulky at all, and although the seams are sewn in front and back thigh (instead of in between the thighs), it doesn't show through your clothes. Overall, great product that I recommend!

Stephanie K.
United States United States

Like the length!

Another new favorite! I like the length & wear under shorts when working out, super comfy!

United States United States

Very comfy

These Undersummers are very cool and comfortable in the high heat and humidity of Florida.

tammi c.
United States United States

Love these!

I am a big fan of these! As a teacher, it helps to be covered underneath a dress just in case, and these are so comfortable, I forget I'm wearing them.

Ann M.
United States United States

I am in love with this item!

I love my long length shortlettes so much that I already have a multi colored wardrobe of them! I needed just a little more length than my Fusions. These fit the bill and are amazing!

United States United States

Perfect absolutely perfect

Excellent love them I wear as pants since I wear really long tops. Extremely comfortable

United States United States

Thinner Fabric

I like the quality of the product even though it’s on the thin side. I intend to wear under dresses now and formal attire when we’re able to gather in large groups. My mistake was ordering the wrong size, too big. I thought the fabric would be that suffocating, jump up and down, try and pull me up squeegeeing fabric. It’s not. I’ll try again and order my correct size.

United States United States

Great product!

This is the third time I believe I have ordered, amazing product , awesome quality, I will be buying again

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

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