Features: 1. Promote blood circulation andmetabolism 2.Release aches pain such as headaches, migraines, neck pain, foot pain, backaches. 3. Promotes better blood flow to enhance overall health 4.Reduce nerve tension, improve sleep quality 5. Relief Plantar Faciities,high heel foot. Function: Relaxation: foot/heel pain and is designed to relieve the tension. 1.Relax: It is tired, sore,we are used to refresh the cocked paw to promote better blood flow, the entire to improve the health of . 2.Portable: So very convenient and portable, you can foot massage anytime,anywhere. 3.Durability: high quality has been made in the environment material of smooth natural pebble stone massage 4.Natural pebble stone which is for caring our healthy and environmental. Tips: This is Acupressure massage sandals NOT FOR all day wear. If you are new for foot massage, you may feel painful in the beginning few days. Please add socks and start with 5 minutes first. Grdually add the wearing time to 15-20 minutes per day. Please allow 1-2cm discrepancy due to different measurement method. Please note this is in Asian sizing, check the measurements carefully before making a purchase. Size: S(35/36): Suitable for foot length: 225-230 mm/8.9-9.1 in M(37/38): Suitable for foot length: 235-240 mm/9.3-9.4 in L(39/40): Suitable for foot length: 245-250 mm/ 9.6-9.8 in XL(41/42): Suitable for foot length: 255-260 mm/ 10-10.2 in 2XL(43/44): Suitable for foot length: 265-270 mm/ 10.4-10.6 in Material: polyester, wood, Cobblestone Color: red, black Package includes: 1 pair SKU: 950-123 On 27-May-21 at 11:42:18 BST, seller added the following information: