Check the listing for details. Women Purple Warm Microwave Heated Therapy Slipper Relieving Sore Muscle Booties. Color: Purple, Condition: New. Listed at 24.99 USD. Description: Our microwavable foot warmers outside is velour, the inside is soft fleece that is great for warming up your cold feet. Just give these booties a quick spin in the microwave and they're ready to go. The warm slippers deliver soothing, long-lasting, deep-penetrating moist heat, help to promote blood circulation and improve foot flexibility. Microwave booties are perfect for foot and ankle pain relief, joint pain, cramps, stiffness, heel pain, tendinitis, plantar fasciitis, etc. Heat therapy foot booties delivers soothing long lasting deep penetrating hot or cold weighted therapy. Soothing healing comes form the heat emanating from the mix of herbs, including lavender, peppermint, and many others. One size fits most, (US Women' Size 12, Men's Size 10.5).