An MRE is a "Meal Ready to Eat". XMRE is one of the leading manufacturers of these meals. They are most often associated with military service. An MRE is usually what a soldier eats for lunch when they are away from their base. Modern MREs have evolved significantly from the freeze dried packages that military person ate decades ago.
Though the science has changed, the principals are still the same. The goal of any MRE is to keep soldiers full, to give them energy, to have a long shelf life, and to be able to withstand a lot of damage from the environment.
The products from XMRE definitely meet all of these goals, but they take it a step further as well. They strive to make meals that actually taste somewhat decent (a problem most MREs struggle with), that meet specific calorie goals, and that don't require any additional tools to consume. For the most part, they succeed at meeting these goals as well.
One big difference in the XMRE brand is that they aren't targeted specifically at military personnel. Sure, the military does make a large portion of their clientele, but they also work with emergency rescue personnel, survivalists, campers, relief organisations, first responders, and even government organisations. Simply put, any group or individual interested in ready to eat meals that are highly durable and have a long shelf life could benefit from an XMRE meal.
There are certainly a lot of MRE options on the market today. If you've spent any time in the military, then you've probably eaten enough of these meals to have your favourite brands. You've probably even had a few from XMRE.
To someone who has never tried an MRE, they may all seem the same. Some people don't even know that there is a difference between an MRE and a traditional freeze dried ration, but there is a world of difference. If you're someone who is already working on a collection of dehydrated or freeze dried survival foods, perhaps it's time you considered some XMRE meals as well.