Maternity Shortette Rash Guard Slip Short - Black | Undersummers

Maternity Shortlette Anti Chafing Slipshort (Black)

Size Guide

Introducing Undersummers Maternity Shortlette®️ Rash Guard Slipshorts. Our customers asked and we listened! We are excited to offer the rash guard panty short protection that you want and love in a comfortable design made specifically for expecting women. 

-The Maternity Shortlette®️-

Small Details Make the Difference

Undersummers Maternity Shortlettes®️ Anti-Chafing Slipshorts

  • High waist & long leg gives these maternity slip shorts maximum comfort, protection, and coverage
  • Seam-Free Inner Thigh offers superior thigh protection
  • Stay-Put Leg keeps your legs protected during activity
  • Front seam flatters your curves
  • 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
  • Maternity slip shorts are assembled in the USA
  • Order your Pre-Pregnancy Size

Type: Maternity

Customer Reviews
4.2 Based on 17 Reviews
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United States United States

Good but Sizing Is Wrong

I used the sizing chart to order this product and they were way too big. Fortunately they wouldn't fall off because I needed to wear them for a special event and didn't have time to reorder. I imagine it must be difficult to fit everyone but because my hips at eight months pregnant are now a whopping 48", doesn't mean my thighs and butt are a 4X. Too big. Too baggy. Can't order more if I can't rely on the sizing chart.

United States United States


These are great, I wish they offered their maternity style in more materials and colors.

Elizabeth M.
United States United States

Pretty good!

I usually wear the athletic underwear, but I thought I’d try the specifically maternity version for the end of this pregnancy. They fit correctly and stay up well. My only gripe is that the tag is on the side rather than at the back so it actually takes a bit of figuring out to put them on right way around (yes, even with the maternity panel). I also bought the athletic underwear in a size up and they fit really well underbump. I strongly recommend undersummers in general. I’ve been wearing them for about 8 years now. In the case of maternity, my recommendation is to just buy the athletic underwear a size up. That way you might still get to use them after baby if you end up staying at a larger size.

Meghan w.

Very comfortable and look cute.

Very comfortable and look cute. I had a coworker who catch a glimpse and she HAD to know where they were from

Mary V.

I'm 7 months pregnant and

I'm 7 months pregnant and the maternity waist is a bit snug. I question whether these are going to make it through the summer with me. Aside from that, I love the silky material and the cute lace legs. Just disappointed that the band wasn't roomier or comfier.

Angela D.

Did a great job with

Did a great job with the chub rub but did not stay up at the waist ...rolled down the whole time I had to keep pulling them up..very frustrating ! Maybe making them longer at the waist with clips to clip to bra...just an idea. Expensive for a Canadian. If re done with clips I would buy again!

Crystal C.

The maternity shortlettes worked perfectly

The maternity shortlettes worked perfectly under my dresses.

Kelsey W.

Bless you guys for making

Bless you guys for making a plus-size maternity short. I'm having a baby in August and it's really hard to find anything in my size that will be cool for summer. These shorts are so amazing - they fit super comfortably, don't feel hot or constricting, don't ride up, don't cling to clothes - everything I could ask for and more. This was my first pair and I am SOLD and coming back for more!

Cassidy K.

These are gonna keep me

These are gonna keep me as comfortable as my original undersummers did while leaving room for my growing bump.

Lindsey V.

This was one of the

This was one of the best purchases I’ve made! I was so overly impressed by their willingness to help me out. Somehow, I received an item with a flaw, and they didn’t make me deal with the hassle of going to return anything, they just made my life so much easier and sent me a corrected one. I will definitely be buying from them again.

Ingrid P.

Love these shorts!! They fit

Love these shorts!! They fit perfectly. I got the maternity kind and I am 7.5 months pregnant. So comfortable.

Caitlin E.

I've worn these several times,

I've worn these several times, and I like them. They're pretty comfortable, and I will probably buy another pair at some point. I like that they're made in the US. That being said, I think they could be improved. The elastic band at the very top is too loose. It doesn't fall down or anything, but there's extra material there (granted I'm going to get bigger as my pregnancy progresses—I think a material that stretches to accommodate growth would be better than a less stretchy, baggy material. Plus a smaller size in the meantime wouldn't accommodate my hips or thighs). Also, the lace pills where my legs rub together. They ride up a little sometimes, but not so much that they don't do their job of preventing chafing. I can get hot in them, but it is summer in Texas and I'm pregnant. Overall, I would still recommend them.

Maggie W.

Some folks might like these,

Some folks might like these, but I prefer a softer stretchier fabric. When I received them, they felt like they would be nice fabric, but when I put them on, the fabric was odd and became stiffer like a corset sort of. I did not want compression as I prefer to simply be comfortable while decreasing chafing and increasing coverage, so these weren't for me.

Gillian H.

They’re comfy and not too

They’re comfy and not too hot. The only thing to be aware of is that they are longer than a number of the dresses/skirts I was hoping to wear them with.

Georgina H.

The Undersummers I ordered for

The Undersummers I ordered for my pregnant grandaughter has helped tremendously with dresses during the heat of the summer! No more chafing!

Yvonne C.

I bought the maternity Anti

I bought the maternity Anti Chafing shorts in a 2xl, compared to Australian sizing they were way too big. I was easily able to exchange them for a size L and couldn't be happier. I am a size 18-20 atm Australian sizing. The shorts are lovely to wear and stay up over my growing bump! Highly recommend the shorts and dealing with the company was a breeze!!

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