Feature 1Soft PU Material: The bottom is made of soft and high elastic PU material, providing cushioning, comfort, and the ability to be washed and trimmed. 2Constant Temperature and Warmth: Utilizing nano constant temperature heating fabric, these shoe inserts generate heat when walking, increasing the temperature by 10 degrees Celsius or more. With physical heating and constant temperature functionality, they provide long lasting warmth without the need for charging. 3Breathable Design: Multiple breathable holes ensure a dry and comfortable experience, eliminating stickiness and enhancing breathability, especially during winter. 4Comfortable Arch Support: These inserts conform to the arch of the foot, providing sufficient support during sports activities and reducing fatigue from prolonged standing. Suitable for both men and women. 5Foot Massage: The insole is designed to accurately acupressure points, relieving plantar discomfort and fatigue while walking and enhancing the comfort of walking.Item Type: Warm Shoe InsertsMaterial: PU, fleece .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List4 xWarm Shoe Inserts