milk storage bag recommendation

check out shopee! or google sillicone milk storage bags, there’s a brand called junobie or smth but i thibk they don’t ship to sg, have to find someone who does sell here. it’s reuseable but pricey. what i see people do if they have quite abit of milk is, freeze, then put the ice block of milk in a big glass jar, when needed, take one block out & thaw