'Oh-No' Proof Boyshort

We think our 'Oh No' Proof Boyshort Period Underwear is pretty great. These cute boyshort undies are made with super soft lycra fabric and carbon cotton, meaning you stay dry when it matters the most.

Our seamless design lets you say goodbye to underwear lines, and the super thin built-in panty liner (sucks up 1-3 tsp of moisture) is invisible even under tight clothes. 

Girls boy shorts that have got your back.

  

  • Boy oh boy, do we have the period boyshorts of your dreams!

    These comfy girls’ boyshorts give you protection from menstrual leaks, odor, moisture, and underwear lines. These are no period panties of yesteryear — this cute and active cut is perfect for girls who want to look and feel good during Auntie Flo’s monthly visit. Our miracle boyshort undies are leak-proof and can absorb up to 3 teaspoons of blood — that’s the equivalent of 2 regular tampons! Plus, they’re totally seamless (can we get a hallelujah for no VPL in your cute summer dress?). We especially love how these nylon and spandex boyshorts wick away any moisture and sweat, keep you feeling fresh and odor-free throughout your period. Our boyshorts for girls are lightweight, cute, and 100% comfortable. Buy your first pair today, or surprise a teen with a gift they’ll love.

    How Knixteen girls’ boyshorts have your back during shark week: Super soft LYCRA SPORT® fabric and carbon cotton to keep you feeling dry ‘Oh-No’ Proof Technology™ (includes a super thin built-in panty liner that sucks up 1-3 tsp of moisture) Moisture-lock sides keep leaks in Our seamless boy shorts design helps you to avoid VPL, even under tight clothes No-stink technology fights any unpleasant smells Great for girls with more sensitive skin, and they don’t itch, rub, or cut into your skin. Perfect for wearing to school, gym class, sleepovers, and even horseback riding!

    Materials: Body: 77% nylon, 23% LYCRA® Gusset Liner: 86% cotton, 10% spandex, 4% carbon Gusset: ‘Oh-No’ Proof Technology ™

    Care Instructions: Machine wash cold with mild detergent, do not bleach, lay flat to dry. *Flat rate shipping to US and Canada. Ships to select countries worldwide. *For hygiene reasons all underwear are final sale.

  • average rating 4.7 out of 5
    Based on 902 reviews
    • 5 Stars
      731 Reviews
    • 4 Stars
      123 Reviews
    • 3 Stars
      26 Reviews
    • 2 Stars
      6 Reviews
    • 1 Star
      16 Reviews
    95% of reviewers would recommend this product to a friend
    Fit
    Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
    902 Reviews
    Rated 5 out of 5
    Review posted

    Great underwear for adults too!

    I am 5'2", 110 pounds and have a lot of trouble finding underwear that don't give me a wedgie. This is because I have a small waist and skinny legs but a rather large behind so finding anything that will fit and won't ride up is always a challenge. In pants, I am usually a size 1 in juniors (if the behind area is really stretchy), otherwise I wear size 2 in petites. I bought both the knixteen boyshort and knixteen bikini leakproofs in a medium size based on other reviews I read. The boyshort fits PERFECTLY and doesn't ride up at all, stays perfectly in place! The bikini will stay in place if I am wearing pants but will ride up with shorts or a dress. I think it's because the leg holes are quite large and the material is soft and after a few hours of wearing they stretch a little and start to ride up on me. They are both quite comfortable and feel very thin, like normal undies. The leakproof function also actually works! Although I would recommend them for backup and not as a main period product if flow is heavy. I bought five pairs total to last me the week and do not regret it at all. Would recommend the boyshort!

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    Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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    Rated 5 out of 5
    Review posted

    Amazing product!

    My tween daughter finds these so comfortable to wear anytime and also takes great comfort knowing that she has protection against leaks if her period starts. True to size based on the size chart. Will buy again!

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    Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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    Rated 5 out of 5
    Review posted

    AWESOME!

    I’m 14, I’ve gone on birth control to lessen pms symptoms, I was spotting a lot the first few months and these saved my life, I did not want to wear a tampon/pad every day so I turned to these and man did they work! I now use them when I get my period on light/medium days just them, and then on heavy days as an extra layer in case of leaks!!!

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    Rated 1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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    Rated 5 out of 5
    Review posted

    awesome!

    super easy to use and clean.

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    Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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    Rated 5 out of 5
    Review posted

    5 Stars from my 15 year old!

    My daughter LOVES these shorts so much! She has always had sensitive skin and it gets irritated when using pads, so these are her go-to on her medium to light period days! She also uses them with a tampon on heavy days, and she never has to worry about accidents. She just asked me if I could buy a few more! I only wish they were a little cheaper....

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    Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
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