Swim Shortlette Thigh Protection Swim Short (Black)

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-The Swim Shortlette®-


Undersummers Swim Shortlettes®️ Anti-Chafing Swim Shorts

You asked for a swim version of our your favorite Shortlettes so we created the Thigh Protecting Swim Short just for you!

SOFT STRETCHY SWIM FABRIC -Our Swim fabric is 82% Nylon, 18% Spandex thicker than our Shortlettes.  Thick enough to be worn alone as your swim bottoms or as a layer.  It allows legs to glide without chafing. 


CARE- Machine wash cold, line dry.


SEAM FREE INNER THIGH - Superior thigh protection without added friction or weakness.  Leg stays put while walking without riding up.  Designed to fit your body without squishing or squeezing.  6.5" Inseam to keep your legs protected during all day fun.


MULTI-PURPOSE WEAR - Our Black Swim Shorts are designed as a swim bottom, mix and match with your favorite top.  Also is perfect for vacations, walking, the beach, amusement parks, water parks, and more.


NON-COMPRESSION FIT -  Stretchy, comfy fit.  Made for all day  fun in the sun comfort.


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.

Type: Swim Shortlette

Customer Reviews
4.8 Based on 24 Reviews
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A W.

I can’t compare these to

I can’t compare these to others as this is the first pair I’ve purchased. I can say The lack of thickness and gauze in the crotch, shows the “divide” of your intimate area - if you know what I mean.

Eve S.

Nice length and stretch. Unrestricted

Nice length and stretch. Unrestricted movement, lovely silhouette for my chubby thighs!

Elexis E.


I AM SO GLAD THESE EXIST. This is one instance where if you are between sizes I might lean smaller so you can get a bit more compression. But they are so cute and comfortable and after one of the worst chafing beach experiences without them, they are heaven sent. Have also worn them for doing a lot of sweat laden physical activity so they dry quickly. Very light weight for having such full coverage.

Kaye R.

I am 68 years old

I am 68 years old and still enjoy swimming in the ocean and doing laps in the pool. In wearing the swim Shortlette thigh protection swim short I find I feel more comfortable and am definitely more confident in public. Thank goodness I have finally found this wonderful product.

Beverly F.

Love these swim shortslettes! I

Love these swim shortslettes! I struggled with finding a swim short I was happy with. These far exceeded my expectation!

Kathy D.

Fits as expected, good quality

Fits as expected, good quality material, and overall good value. Works well with my tankini tops

Gilda P.

I love it. It is

I love it. It is so comfortable.

Carrie C.

My swim shorts are very

My swim shorts are very comfortable, not binding at all.

Rebecca M.

fits just like the other

fits just like the other shorts, only good for swimming. I love these

Deborah D.

So happy I finally ordered

So happy I finally ordered the swim shortlettes! The fit is great, I feel covered and modest. Pool here I come!!

Cammie W.

Absolutely love the ones I’ve

Absolutely love the ones I’ve ordered. The new swim ones are fabulous to wear in water or out.

Megan O.



Rita P.

These are great! They dont

These are great! They dont give you muffin top and they dont slip! No more chub rub for this girl . :)

Tia B.

The swim short is a

The swim short is a terrific way to have 'shorts' on for all day water activities that transition into needing to have regular clothes. Love how they fit and feel.

Michele S.

Excellent coverage!

Excellent coverage!

Noel P.

I love them. They are

I love them. They are just long enough and i have found a passion in wearing cute summer dresses again. I will say that my stomach is bigger and my legs smaller, so they are a little loose around my legs. I was right on the verge between large and extra large, i did size down, as that is what the instructions say to do, and they fit great. So glad i took the plunge and spent a little more than i wanted to. Everything just slides over them and i will be getting more

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 54-57
5X* Fusion only 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 9/19/2018