• Tourmaline Foot Insole Material: Tourmaline, nylon, spandex.
• Long-term effect and durable, wear comfortable, does not affect work, study and life. the caused by spur, achilless tendon, , ease , fatigue, suitable for smelly feet, dermatophytosis, etc.
• Self-heating product, no external power and heat, without using any energy, reliable and eco-friendly. For results, please take out the product and place it in the air for 1-2 minutes, they will working and achieve the desired effect quickly.
• It fits of boots and shoes universally, and it gives the sized comparable in womens and mens sizes.They are thin so they do not take up much space in your shoes.
• Warm feet inserts are for keeping your feet warm when temperature . Ideal for skiing, camping, hunting, working, cycling, hiking, walking, fishing, or other outdoor sports.

• Product Dimensions ‏ : ‎ 10.43 x 3.54 x 0.07 inches; 1.44 ounces
• Date First Available ‏ : ‎ February 26, 2020
• Manufacturer ‏ : ‎ Exceart
• Country of Origin ‏ : ‎ China