The Sweetheart



Sweet, cheeky and comfy with a thin lace trim. Your period just got way cuter.

Flow: Light = 10ml / 2 regular tampons or Medium = 15ml / 3 regular tampons. 

Light: In the days leading up to your cycle, or the days leading out. 

Medium: useful for your entire period if you tend to flow light, or suitable from day 3 onwards if you flow on the heavier side.


Shipping & Returns

Free shipping on all AU orders +$100 and all international orders +$200.

Flat rate shipping of $7.00 for orders less than $100.

All in stock items are dispatched within 1-3 business days (excluding weekends, public holidays and busy sale periods) and deliver in 3-8 business days. 

Our undies are delivered to you by Sendle – Australia’s first 100% carbon neutral delivery service.

You may return all other unworn garments in original unopened packaging for a credit or refund within 30 days of your purchase. View our full return policy here

Try risk free for 30 days*

As a first-time customer, you can try one pair of undies for 30 days risk-free. If you don’t like how they function, we will happily give you your money back (minus the cost of shipping).

Unfortunately, garments that have been worn can no longer be returned due to sanitary reasons. And you know, the market for second-hand underwear isn't all that flash!

So, we will require a brief explanation of the reason for your request.  The trial applies to one worn garment only.

No further refunds, credits or exchanges can be given on any additional worn or washed underpants.


Formulated with organic cotton and nylon made from recovered ocean plastics, these underpants whisk moisture away from your body (and plastics away from the turtles!), keeping you dry and "good karma'd" all period long.


Find our size guide here

*Disclaimer: The Sleep Tight run a little smaller than our other sizes, if you are in between sizes we would recommend choosing the larger option. Should you have any questions, please email us on and our team will be happy to assist further. 

Customer Reviews

Based on 7 reviews
The perfect introduction

I bought these for my teenager as an introduction into dealing with menstruation and they couldn’t be more perfect for her. Very sweet design too!


Super cute style, lovely soft fabric and although the absorbency is thin they work really well.
I have the light absorbency and I wear them when I don't have my period too

The most comfy ones I’ve tried!

Great for me and the environment :)) highly recommend!!

My favourites

So soft and comfy. Work brilliantly without the bulk. Highly recommended.

Best undies

Best period undies I have tried. The fabric is very soft, and the padding is comfortable and doesn’t feel bulky.