Manduka Travel Meditation Cushion, Black Innovative and comfortable design provides optimal hip support for seated meditations and poses when you are on-the-go The outer cover is high quality, odor-resistant, and made from our ecofriendly Cocona eQua Plus fabric Zipper access to the buckwheat hulls allow for removal or addition of buckwheat hulls A lighter weight alternative to other meditation cushions , its a manageable weight for portability without compromise to the durability or support Buckwheat hulls are not a grain or a wheat-related product; People with wheat allergies should not have a problem using this product