Why kayaness?

Discover the future of period protection with our Boyshort Menstrual Underwear. Stylish, comfortable, and sustainable, this underwear provides superior, worry-free leakproof protection. Make the switch today.


Product details

100% Recycled Polyester

95% Organic Cotton, 5% Spandex

Inner Liner:
100% Polyester (sealed inside, not in contact with skin)


Bundle Discounts

Buy any 2 underwear or tanks, save 5%.
Buy any 4 underwear or tanks, save 10%.
Buy any 6 underwear or tanks, save 15%.


Customer Reviews

Based on 4 reviews
Nice product!

Order arrived quickly. Love these boy shorts. Very soft and comfortable material & they worked well the days that I was able to use them. These will be a great addition to rotate into the routine next month. I only wish that I had sized up from my usual size. They fit fine and I am happy with them, but I was expecting more of a stretch/relaxed fit. Will definitely order more at some point.

Nicole Timo
Never Going Back

I mean it when I say NOTHING compares to the K&ES period underwear. I’ve recommended them to everyone I know who has a period and I will never switch to another brand. I highly recommend these ❤️

New favorite!

These are the most thoughtfully designed period boy shorts I have tried, the seeming and construction is excellent. I think these run a bit small but they are my favorite period underwear by a huge margin.

I am typically a size medium but I thought these were a bit compressive so I ordered a large most recently and they fit great. I would recommend sizing up if you are in-between sizes or prefer a more relaxed fit.

Ellen Montague
So soft!!!

I was not expecting these to be so comfortable! So happy with all the materials and quality too, and so very excited to use them over and over and over again!