It is one of the most certain aspects of health & hygiene to come up. While I am not that familiar with feminine hygiene, I do listen when the subject is brought up and take notes, as it does come up pretty often in the hiking community. As I want to be prepared for the most likely situations, this is certainly one of them and I keep a period kit in all my go bags and camping/backpacking gear.
I asked a few hiking friends how they dealt with their periods while thru-hiking.
* "For one, all the girls I know wore Diva Cups. While it can be used easily it does take some getting used to."
* "Someone else is using Marina and so she does not get a period while on it but admits that is what works for her and won't for everyone.
* Someone else mentions their "wife used it and had some complications and switched to Nexplanon, which goes on your arm, and she was very happy."
* "I never used tampons while at home, but while hiking on the trail a tampon is easier to deal with, especially the trash part. A separate dry sack is used to carry the trash and you just need to be careful to hang it, as you hang all food bags while on the trail, away from the food bags and not keep it in the tent, as it can attract wildlife. Some may use sanitary pads for general use, or tampons without applicators or like a mini tampon. Another option is Skyle, an IUD, which is a good option for a trail, but not as useful in an emergency situation."
It seems then, that a good option was the Diva cup, as it's something you can take care of yourself and is something you can put in a go-bag. It's suggested to practice with at home first and can be awkward at first because it's so different, but some, it's said, get used to it and use it every month. There are other brands that have very similar products, but the Diva Cup has many more positive 5 star reviews. It may not always be an option to use, like when you don't have a private place to remove and clean the cup.
The DivaCup is a reusable menstrual cup that collects, rather than absorbs menstrual flow. The DivaCup offers up to 12 hours of leak-free protection, is easy-to-use, odor-free, super comfortable and saves you money. For the price and thousands of 5-star reviews, it seems a no brainer for anyone go-bag, even if you are a single male, you may be a hero for someone else.
Model 1 is recommended for those under the age of 30 who have never delivered vaginally or by cesarean section.
Model 2 is recommended for those aged 30 and over and/or those who have delivered vaginally or by cesarean section regardless of age.