Sure Pak Complete Meals with Heater features comes with a flameless ration heater which is activated by water

Features

This item comes with a flameless ration heater which is activated by water.
Nsn 8970-01-321-9153 (heater)
16.75" x 9.25 " x 11"
12 meals per case
Sure-pak 12 meals (12 of each: entree, side dish, desserts, cracker packs, spreads, beverages, and coffees along with condiments)
Direct from u.s. government contractor
Range of main entree types include: beef stew, beef ravioli, chicken w/cavatelli, black bean & rice burrito, cajun rice w/beef sausage, minestrone, beef w/mushrooms, spaghetti w/meat sauce, meat loaf, chili macaroni, grilled chicken breast, chicken & rice pilaf, cheese tortellini, jamaican pork chop, country captain chicken & others