FYI- this will be a descriptive review and may be TMI for some people...I have been curious about the period cups, but have been too nervous to try them. I've also read that the dyes that make them blue, purple, or pink are artificial and unsafe. The color used in these is from charcoal, so it's safe, and the reusable ones are colorless, if you want to go that route. In addition, I don't want to have to clean period blood out of a cup in a public restroom and boil it at home (yuck).Flex disposable disks are a different story. Take all of the upsides of tampons (versus pads or the ick factors of reusable menstrual cups) and multiply that by 100. To be honest, I have not tried reusable cups or discs, nor do I plan on it. Evidently, one must be aware of how high or low their cervix is, and other factors that I, personally, don't know how to determine. They are pricey and you don't know how they'll fit you, especially the cups, from what I've heard in reviews, such as Period Nirvana reviews on youtube. The suction aspect of cups seems complicated and the upkeep is more than I want to deal with.Enter flex disposable discs! Imagine that you could safely use a tampon for 12 hours at a time, whilst being able to use the bathroom without having to change your tampon. For those who hate the feel of pads or hate using overnight pads and STILL having leaks on undies, clothes, or sheets, I wholeheartedly suggest discs. I hate using pads overnight and have tried using incontinence underwear overnight because I somehow always leaked using extra long overnight pads. So I preferred using tampons, but due to the risk of TSS, I used to set an alarm for 4 am to change my tampon.This cycle, I started using the flex disposable discs and periods couldn't be easier. I HAVE NOT HAD ANY LEAKS and I'm a complete beginner in this kind of thing. As I mentioned, they self empty when you pee, or go #2. From reviews, I heard that if you didn't check your disc after using that bathroom, or even if you sneezed, leaks could happen and could be scary and intense. Since this is my first time using these, I've worn period underwear or pantyliners to be safe, but have not had any messy or gross problems. To be safe, I wash my hands after using the bathroom and use a clean finger (or thumb) to push the rim up behind my public bone to make sure it's in place and I won't leak.Period Nirvana suggests removing your disc in the shower if you're new to this alternative and to mentally prepare for the sight of blood, but I haven't had any problems; in fact, my period seems to be lighter than ever (I don't know if that's related to the disc or not). In terms of cramps, I read some amazing stories about debilitating cramps getting better with discs, and I'm happy to report that in my case, I only had one day of the most minimal cramps ever. Growing up, my school knew that I'd need to be absent at least one day every month because I'd be doubled over in pain.In summation, if you can use tampons (especially tampons with no applicator or the painful cardboard applicators) you can use disposable discs- I really believe you can do it! I've had times with Tampax pearl where the string comes off or the string is in backwards and I've completely panicked, but with a disc, you don't even need to put your entire finger in the find the rim. As for inserting, there's no complicated way of folding (like you do with a menstrual cup). I believe the flex reusable has a notch that needs to go in the front or the back in order to be leak proof, but with the disposable, simply pinch it in half (to make it like a tampon) and slide it in! It may even be smaller than some tampon applicators, but it's more comfortable that the best gliding tampons I've ever used. My favorite part is that before bed, I can put in a disc and not have to worry about Toxic Shock Syndrome. In a 24 hour day where I'd normally use AT LEAST 6 tampons (I use a new one every time I pee or take a shower, and use 2 during the night), I use 3 discs- in my early 30s, my flow can be heavy on day 2 or 3, I've been changing my disc during the day since I'm new to this, but I could probably just use 1 every 12 hours.I literally never thought I'd say this, but I'm never going back to tampons.