Women's Athletic Thigh Protection Rash Guard Underwear Slipshort (Black) | Undersummers

Athletic Underwear 6.5" Length (Black) Final Sale Clearance

Size Guide

Athletic Underwear

Better than a bulky bikeshort with a smooth waistband these women's athletic thigh protection underwear slipshorts are made of lightweight cool breathable fabric, cotton gusset, and feature a long lasting seam free inner thigh.

* LIGHTWEIGHT SOFT STRETCHY FABRIC - Our Signature Premium Fabric is lightweight, soft, stretchy, silky and oh-so comfy. It allows legs and clothes to glide without pilling.  96% Polyester/ 4% Spandex, exclusive of trims, cotton gusset. 

*CARE - Machine wash cold, line dry. Once you have slipped on your favorite pair of rash guard underwear, you will want to wear them every day and every night.

* SEAM FREE INNER THIGH -  Superior thigh protection without added friction or weakness. Leg stays put while walking without riding up.  Our designs are made to last.  This is a staple wardrobe piece that you will wear often and for many seasons.

* MULTI-PURPOSE WEAR - Our Shortlettes are designed as a layering piece and to be worn as underwear.  Perfect to wear for sleep or for layering under a favorite dress; our rash guard underwear is thin and lightweight.  Perfect for vacations, walking, the beach, amusement parks, water parks, date night, work, and more.  They are not meant to be worn as outerwear alone.

* DETAILS - Designed by a woman for a woman's body.  Comfort fit wide waistband smooths without being tight.

* NON-COMPRESSION FIT - Stretchy, comfy fit.  Absolutely Not Shapewear.  Made for all day comfort.

* CARE - Machine wash cold, line dry

* QUALITY GUARANTEED -We want you to LOVE your Undersummers garments.  Please contact Customer Care if you are not completely satisfied with your garments and we will be happy to issue you an exchange or refund.  Our Sizing is different.  Please use size chart and measurements for sizing.  

*Cut and Sewn in the USA of imported (Korea) Fabrics.

Final Sale

Type: Athletic Underwear

Customer Reviews
4.3 Based on 202 Reviews
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LeeAnn B.
Canada Canada

Great for working out

I wear these whenever I hit the gym. Got fed up of my thighs rubbing together when I jogged on the treadmill. This solved my problem.

Sam M.
Luxembourg Luxembourg

Not what I was hoping for

I think I probably wasn't the intended audience for these, I thought they would also stop chaffing, but they're too short to do that- a pity as I'm quite short and the shorlettes often peek out the hem of dresses, so I was hoping for a slightly shorter alternative, but these are a bit too short. They're quite comfy otherwise, I guess they're meant as cycling shorts or for the gym, I'm sure they would be just fine for that

United States United States

Wanted to love.

I love the concept but these are too short and won’t stay up at the waist. The fabric was thicker than I expected which makes them too warm in my hot city.

Katherine L.
United States United States

So comfy!

I wear them every day, whether I'm in a sundress or shorts. I live in Florida and the summer humidity makes everything sticky. The Undersummers are the answer I didn't know I was looking for!

Sarah J.
United States United States

Life changing!

Comfortable enough to wear all day and no more chub rub! A game changer for curvy girls who love wearing dresses. I highly recommend these shorter length athletic unders for petite ladies as well.

United States United States

Can't walk/hike without them!!

My husband is an avid geocacher and likes to walk and hike, A LOT! I like to go as well, but found I was constantly raw or chafed afterward. NO MORE!! I have worn them under nearly any type of pants, (jeans, capris, shorts and even skorts) and now I will not hit the trail without them. These Undersummers have had a huge impact on my life. I now go out and walk more (good for my health) and I get to spend quality time with my husband (good for my heart and health!). I now own 4 pair, and I am sure there will be more!

Sue S.
United States United States

Love my Undersummers!

I have been looking for under-garments like these for some time as I rarely wear anything except skirts or dresses and don't like having to wear pantyhose in the summertime. I love these undersummers I recently purchased.

United States United States

Legs Rolling

I liked everything about my undersummer panties except that the bottom of the legs roll up my leg. I would have given this 5 stars otherwise, because I like the material and the wash & wear features.

Becky N.
United States United States

Best shorts ever

Love these. Perfect length for me.

sharon C.
United States United States

Love Undersummers!!

So comfortable! Beautiful! I can wear all my summer dresses and skirts in total comfort now - it’s like I have a whole new wardrobe!! Thank you for an amazing fashionable addition to my wardrobe!!

Lauren G.
United States United States

You can’t have too many undersummers

I love the waist on these. I do wish they were a little longer but the work very well under my dress pants.

Linley B.
United States United States

Run smaller than the classic shortlette

Run smaller than the classic shortlette. This picture shows an XL (black) on top of a Large classic (beige).

United States United States

Two hits and a miss

i absolutely love my slip shorts (2 pair) and the swim shorts, too. Giving 4 stars, thougb, because I am disappointed in the athletic shorts. Okay for walking, but not comfortable for pilates or yoga (due to waistband). Absolutely recommend the slip shorts and swim shorts.

Angie J.
United States United States

Shipped Wrong Twice

I ordered my first purchase for Undersummers which was 2 shortlettes at 6.5 length. My order arrived and only the white pair was correct. The black pair was much longer. After numerous emails back and forth and three phone calls that never got returned, I received my second shipment which was so suppose to be the 6.5 black shortlette. It was the exact pair that was sent to me wrong the first time. I hope I get the correct pair the third time. Three times a charm they say. We will see.

Undersummers by CarrieRae Athletic Underwear 6.5 Length (Black) Final Sale Clearance Review
Melissa S.
United States United States

Odd fit

I found that these definitely fit differently and ran smaller than the original fit. I’m not sure I’ll be wearing them.

United States United States

Almost Perfect

The fit is great, however, it rode up my thighs as I walked. I will stick to the anti-chafing slipshort.

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 info@undersummers.com and we will respond within 1 business day. 

updated 6/22/20