Navy Underwear Shorts | Anti-Chafing Breathable Slip Shorts

Fusion Shortlette Anti Chafing Slipshort 7" Length (Navy)

Size Guide


Undersummers Short Length Fusion Shortlette™ Slipshorts are the perfect high waist rash guard panty shorts that provide the ultimate thigh protection for women now with a shorter leg length for shorter skirts and dresses.

These navy underwear shorts are foundation wear that are not shape wear, and are non-constricting. Our Short Length Fusion chafe prevention slip shorts are a combination of our Lace Shortlettes leg feature and leg length with our Classic Shortlette waistband. 

Our Short Length Fusion Anti-Chafing Breathable Slip Shorts are available in both regular and plus sizes.

Why Undersummers Short Length Fusion Shortlettes?

  • High waist rise
  • 7” seamless inner thigh for maximum protection
  • Stay-put leg design resists leg creep while walking or running
  • Seam free inner leg is added anti-chafe protection and longer wear
  • This is a panty, no need for a second heat inducing layer
  • Assembled in the USA





Customer Reviews
4.8 Based on 38 Reviews
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United States United States

Perfect fit


Karen C.
United States United States

Love the color

They are different than others I’ve tried but work very well. Glad you have a variety of color options.

Rena C.
United States United States


These are comfortable, don't ride up, the waistband doesn't roll, and they fit perfectly.

United States United States

First time buyer

I found them very comfortable and a perfect fit!! If the wind blows, I feel I can have a Marilyn moment!!! Will keep an eye on the sales for more!!!

United States United States


This was exactly what I was looking for, very comfortable! I will definitely buy another pair!

Gae W.

The product is brilliant and

The product is brilliant and the service is as well. My only frustration is that the fun coloured ones are always sold out. I (and my friends) would like some more fun ones,if your skirt flips, give us perzazz!

Alexandra L.

This has been my first

This has been my first purchase of undersummers. Am finding them very comfortable.

Carol D.

I have loved Undersummers but

I have loved Undersummers but this last pair I bought are not as roomy as all others I have purchased, which are quite a few. Don’t know what was done differently but they are not as comfy as all my others.

Jill L.

Nice, would've nice if there

Nice, would've nice if there was a cotton option

Heather M.

Love having the shorter length

Love having the shorter length for shorter dresses! But the lace is cute so even if it peeks out on occasion I don’t mind. :)

Karen B.

Love this product! As a

Love this product! As a kindergarten teacher I had given up wearing dresses for modesty reasons. So nice to be wearing them again.

Kellyanne E.

This style is not my

This style is not my favorite. I much prefer the design with the lacy front panel—I feel like it lays flatter and stays better. This one has just a thin elastic along the top, which makes it dig in more and produce more of a “poochy-tummy” effect. I’m keeping it because I needed a shorter shortlette for my shorter dresses, but I’m putting out my formal wish for a shorter version of the lacy-panel design.

Tracie G.

Comfortable & fit well! I

Comfortable & fit well! I love them & will be ordering more colors & styles soon.

Caitlin M.

So cute! So comfy! Exactly

So cute! So comfy! Exactly what I wanted for under neath my dresses!


I like the material and

I like the material and the loose but I don’t care for the seams going down the front they should put the seams in the back and I wish that the pants were a little more high waisted

Claire D.

I wanted to love it

I wanted to love it - I really did. When I saw the Shortlette, I was so excited; this is just what I had been looking for! So, I placed my order, based on the size chart, and I had to return the Shortlette because it was a bit big - I'm not used to wearing an undergarment that was so loose. I returned & exchanged for the next smaller size, and it fit well. But, when wearing it, the waist just didn't stay at my waist - it rolled down. The Shortlette doesn't have an actual waist band, and I now know this just doesn't work for me as well as I hoped. It may just be me - short torso, very round where I wish I wasn't - but the Shortlette isn't something I will wear as much as just plain underpants. A great idea, and so comfortable to wear under a dress! But, not the best garment for me.

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