When you're in the middle of nowhere and the only thing that will save that dying party member is one of your potions, they'll be glad you invested in a travel sized mortar and pestle to grind the ingredients. The pouch is fastened by two buckled straps which run all the way around and also function as loops to allow it to be slid onto a belt. Inside there is a cradle to hold the mortar while the pestle is secured atop a small pouch suitable for ingredients or lammies.