Light Blue Underwear Shorts | 7-Inch Inseam Under Skirt Shorts

Fusion Shortlette Anti Chafing Slipshort 7" Length (Something Blue)

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.

Shortlettes are foundation wear that are not shape wear, and are non-constricting. Our under skirt chafe prevention slip shorts are a combination of our Lace Shortlettes leg feature and leg length with our Classic Shortlette waistband. 

Our light blue underwear shorts are available in both regular and plus sizes. We also offer these blue underwear shorts with a 9-inch inseam.

Why Undersummers Short Length Fusion Shortlettes?

  • High waist rise
  • 7-inch inseam 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
4.9 Based on 21 Reviews
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United States United States

I love these, now own 3 pair

I wear dresses almost every day to work, shortlettes are great. I wear a 3X and the shortlettes are silky, like a slip and my dresses are less clingy and my thighs don't stick together. A WIn Win

Brandy B.
Canada Canada

Comfortable and light

These were an excellent find! I heard about them in an ad on the She's All Fat podcast and I am so grateful. I wear skirts and dresses nearly exclusively so I am always looking for anti-chaffing shorts. These are great. I just wish they were higher waisted and came in a shorter option, 7" is just a little long for some of my shorter skirts. They stay in place and don't create an extra layer that many others do. I will certainly be coming back for more.

United States United States

Cute and cozy

I love these so much, the colour is cute, the fabric is soft. I've had some issues with the sizing of the other longer shorts because I have thick thighs but these ones fit well and cut to a perfect point of the thigh to ensure no chafe/max comfort but not peak out of my shorts. I love them!

Shannon D.
United States United States


I really love this product! They are super comfortable and they are very cute

United States United States

So comfortable!

I have purchased several pairs of shortlettes now for wearing under dresses and skirts and for sleeping. They are so comfortable! I like the cute colors and the lace details.

United States United States

Best Purchase Ever!

I wore these under my wedding dress on a HOT August day. It was so great to know that I wasn't going to have any issues the next day. I was comfortable the whole night thanks to UnderSummer!

Jennifer d.
United States United States

These are great!

I love undersummers. Both under summer dresses and as a sleep short. So glad I bought several of these.

United States United States

LOVE Undersummers!

I am a petite lady with bigger thighs, 5’-1/2” and 139 lbs. I have tried so many types and brands of shape wear to wear under dressed and skirts. The legs always rolled up my legs which had me discreetly trying to pull them down. Undersummers do not roll up my legs; they stay put. Since I am petite, I have purchased the 6-1/2” and 7” lengths. The length is good under dresses and skirts that hit me right above the knee. I tend to not wear shorter length dresses or skirts. I love the variety of colors and the feminine and sexy look of Undersummers. I highly highly recommend!

Robin T.
United States United States

So happy!

These are so comfy! They do the trick in this summer heat with me and my thighs causing an inferno.

Tiffany J.
United States United States

Exactly what I wanted!

These are great! I wear dresses all summer long and Undersummers anti-chafing slip shorts are perfect for hot weather. I love the pale blue color they have a ‘vintage’ feel. I will order more (one fo each color dress).

genger B.
United States United States

Love the comfort!

Overall doing great! It is hot and humid here and the length is perfect for no chafing!

Lanell F.
United States United States

Feeling confident!

I love the soft silky feel of under summers. Not so tight it cuts off your circulation not so loose that feel they could slip off. Simply perfect fit.

Dawn P.
United States United States

Love these


United States United States

Great for travel

I purchased these to wear on a trip last summer through 5 countries. We walked 6-10 miles a day touring. They never rode up and were comfortable and cool all day. Since we traveled with backpacks they were easy to wash and dried overnight. Love!!

Tracy H.
United States United States

Pale blue undersummers...

They fit quite well and I really like having them to wear under my dresses.

M C.
United States United States

Comfy and Cool

I love the shortlettes! Perfect under dresses or loose clothing. Cool. They are now my summer standard. Thank you!

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