Rejuvenate your body and sooth your muscles with a microwavable heat pack. Designed for your comfort, this heat pack offers 20-25 minutes of lasting warmth, the ideal duration for effective heat therapy. You can also use it as a cold pack right from the freezer without the mess of dripping ice packs. Made with care, my pack features a muslin liner filled with heat-retentive rice, as seen in the last photo. Rice is the perfect choice as it absorbs moisture from the air between uses, so you get moist and penetrating heat every time. The 100% cotton flannel cover, featuring a striking red and black buffalo check plaid design. Its size makes it perfect for targeting specific areas or soothing overworked hands. Whether you're soothing a boo boo or looking for a gift for your favorite coach or outdoor enthusiast, this heat pack is an excellent choice. What you'll get ~One rice-filled pack with a removable, washable cotton flannel cover. ~Pack measures approximately 7 inches long by 4 1/2 inches wide. ~Weighs approximately 13-14 ounces. ~No added fragrance, just the subtle, natural scent of rice.