Reusable, non toxic, 100% natural cotton. Feel: Soft, comfortable, soothing, relaxing, conforming to body. Scent: Unscented. This rice pillow is portable ideal on the go or long travel. This pillow is made with 100% all natural cotton filled with rice. These pillows are designed to conform to any part of your body to help sooth aching muscles. Neck, Shoulders , Arms, Back, Legs, Stomach. This pillows can be used as heat or cold packs. Pop them in the freezer for an hour or two. Or in the microwave heat for 2 mins until warm. If that's not enough go for 3 mins. Warning : Please do not heat warming pillows more than 4 mins. This will damage the beautiful material these pillows are made out of. Shipping : All pillows must be shipped USPS Priority Mail. This will be the cheapest shipping due to the weight of product.