The spice bottles are made of high quality food-grade plastic, durable and lightweight, can be used repeatedly after cleaning. note. the seasoning bottle can be washed with hot or cold water. each jar has its own opening that allows one to sprinkle the spice and /or seasoning of choice.â  the lids are also airtight and keep the spices fresh for longer. one is able to monitor the amount of spices one uses due to the transparent jar. multi-purpose: use our plastic jars for organizing drawers, seasoning, herb blends, powder, glitter, storing spices, salt, pepper, herbs, diy projects and more.