Features:* 1. Adapter, USB laptop and charge pal, convenient to use anytime and anywhere.* 2. Soft carbon fiber heating coil, EVA insert material, uniform heating, high temperature conversion efficiency, fast heating.*3. Soft nap, delicate wrapped edge, skin-friendly, warm, breathable and dry.* 4. Low voltage, energy saving and environmental protection, convenient and safe.* 5. 40°-45° high temperature durable heating, long service life.* 6. The size of the cutting insole depends on the inner length of the shoe.* 7. Washable, not machine washable. Specifications:Insoles Material: EVAM Heating Material: Carbon Fiber Heating Coil Temperature: 40°-45° (it depends on the environment)Suitable Shoe Size: 35-46Input Voltage: 1.5V/2A Bandage Size: 36*11*4.5cm/14.2*4.3*1.8inInsole Size: 30*10*0.5cm/11.8*3.9*0.2, 2in Package Size: 33*18cm/13*7.1in Color: BlackStyle:01:1 Pair of Heating Insoles02:1 Pair of Heating Insoles + 1*USB Cable03:1 Pair of Heating Insoles + 1 Pair of Straps + 1 Pair of Packing for Batteries04:1 Pair of Heating Pads + 1 * USB Cable + 1 Pair Battery Pack + 1 Pair of StrapsNote: Each Battery Pack Requires 3 AA Batteries (Not Included) PackingPacking List:01: 2pcs Heating PadsOr02: 2pcs. Heating Inserts + 1 * USBLub03 Cable: 2 pcs. Heating inserts + 2 s