Diary of a Fit mommy

Yes, They’re Period Undies!

We all need a little beauty for our booties.. especially when it is that time of the month! This is why I choose Proof period underwear ever since I ditched pads and tampons during my period. They have proven themselves to be the best period undies on the market and the most stylish, if you dont mind my personal opinion! I have loved Proof underwear for a long time though and you can read an older blog post about it here.

The reason why I chose period underwear over using pads or tampons is because not only is it happier for the environment (think of allllllll the junk sitting in the landfills), it saves me money in the long run. Plus, who wants all of those chemicals in and on their bodies? Not me!

They have JUST released two cute lace styles just in time for Valentine’s Day so I wantd to encourage you all to show yourselves some love and gift yourself a pair. You may use code SIA10 for a discount on all styles, but first, let’s explore the newest additions!

Can I also just say that these lace period panties were SOOOO COMFY?? I usually am NOT a fan of lace because I hate the way it feels on my skin, but these were perfection. Even my fiance was blown away that they were made for menstrual cycles because they are so sexy and femimine!

Not your average period panty! See what I mean.

Leak Proof® Lace Back Bikini

The lace back bikini is super flirty as it shows the entire back of your bum, covered with lace with adorable details on the sides. This goes with any sexy black bra and has a soft, romantic feel. It definitely has a lingerie vibe to it! I honestly could not believe these held so much blood.

ABSORBENCY: Moderate. Holds 3 tampons or 6 tsp of liquid

The Lace Back Bikini is designed with a slim Leak Proof® core and Leak-Loc® edges to help you feel dry, while lace detailing disguises powerful leak protection. Proof® undies are more sustainable than single-use period products; just wear and wash, not use and toss.


  • Low-rise with a cheeky fit
  • Soft, stretch lace adds a feminine touch
  • Stretch & recovery fabric and flexible Leak Proof ™  core offer security and comfort


Leak Proof® High Waisted Lace Brief

Next up are these vintage inspired beauties! I love the high waist look and feel because it makes me feel secure as I am a girl with hips. I also love the lace being on the sides. These are hands down my favorite of the two pairs! The top of the panty also fits snuggly around my waist-not too tight. Also… the fabric is smooth and buttery soft!

The High Waisted Lace Brief features smooth bonded edges are seamless under clothing, while multi-way stretch fabric moves with you. The patented Leak-Loc™ technology wicks away moisture and absorbs liquid to keep you feeling dry and comfortable.

ABSORBENCY: Moderate. Holds 3 tampons or 6 tsp of liquid


  • High-waisted brief with full back coverage
  • Smooth bonded edges disappear under clothing
  • Stretch & recovery fabric and flexible Leak Proof ™ core deliver security and comfort


  • Moderate Periods
  • Light Bladder Leaks
  • Replace a Pad
  • Replace / Back Up a Tampon or Cup
  • Sweat
  • Odor Reduction


As I have been a fan of Proof panties for over a year now, I am beyond thrilled and amazed with the new lace additions. I think they are a brand that goes above and beyond for not only comfort and beauty, but also for a product that actually works. So say goodbye to your pads and tampons and be sure to try these out!

BOTTOM LINE: Both undies offer a flexible, slim Leak Proof ™ core along the center of the undie with an extended lining that offers enhanced leak protection.

They are both great for:

  • moderate periods
  • light bladder leaks
  • replace a pad
  • replace / back up a tampon or cup
  • sweat
  • odor reduction

Curious yet?? Use code SIA10 for 10% off when you shop Proof period underwear here.

*Pay in 4 interest-free payments with klarna

Your trainer and friend,