I recently purchased quite a few of their leakproof styles ranging from moderate to super absorbency but their website did not have an option to leave a review. Please do your research before purchasing these whether it be for primary or back up protection. These do not work as advertised. The super absorbency style does an okay job at absorbing but the gusset is super thick and feels like I’m wearing a pad. The medium absorbency style which claims to hold 3 tampons worth is pretty much useless. There is zero absorbency in the gusset and I found myself leaking in less than an hour on my light day. There are no returns or refunds which is poor business decision on their part. I truly believe that if these are advertised as period underwear but cannot perform as such the buyer should be allowed a partial refund. (Modibodi allows one refund for each new customer.) Plus items that have not been opened should be allowed a refund. Especially since these are not cheap but costing $20-$30 a pair. I will not be purchasing from Knix again and I also don’t recommend to friends or family.