I have some of those. A bunch of Mountain House and Wise. Variety is good.
Ditto, along with some LDS #10 canned and Mylar vacuum sealed goods (beans, rice, oats, flour, sugar, onions, carrots etc..
FYI, the S.O.S bars are about 410 calories each and don't make you thirsty.
They are primarily coconut and soy bean
I like them a lot for the taste, cal count, water proof packaging and shelf life (5 years).
They also make "New Millennium Energy Bars" which are Fruit flavored ( ere-go Millennial) and taste pretty good. Lemon
Same packaging, shelf life 400 k each.https://sosfoodlab.com/products/400-kcal-new-millennium-energy-bars/
I gave a case to my then future SIL cuz he needed weight gain to Qualify and these as daily "snacks" helped him gain the weight needed.