The Lower Back Wrap is just the right size for smaller therapy areas. Perfect for relieving stress, tension & muscle pain. Our microwavable Lower Back Wrap gives hours of reusable, penetrating hot (or cold) therapy. The Lower Back Wrap is filled with 12 healing herbs and flax seed. Microwave for instant heat therapy or chill for instant cold therapy. Hot or cold the Lower Back Wrap can relax, rejuvenate and restore your body and soul. Features: 100% natural herbs & flax seed Made in USA Penetrating warmth Soft, cozy fabric Heats in microwave Relieves stress, tension & pain Awesome bed warmer Fabric: Polyester Fill: 100% All Natural Ingredients, including: Lavender, Valerian Root, White Willow, Chamomile, Rosemary, Peppermint, Spearmint, Hops, Yellow Dock, Lemon Grass, Cinnamon, Yarrow, Premium Flax Seed, may include other natural grains. Dimensions: 12"L x 14"W x 0.5"H; Weight: 2.5 lbs.