This intelligent heating clothes has three temperature adjustment, one button operation, easy for you to choose befitting temperature. With soft inner fabric, it is skin-friendly and comfortable. It also can dredge meridian, blood circulation, promote metabolism. Features: 1. Made of superior nylon material, which is heat-resistance, good toughness and good antibacterial ability. 2. Carbon fiber filament heating, fast heating and good effect. Thermal conversion rate is over 90%. 3. Three temperature adjustment, one button operation, easy for you to choose befitting temperature. 4. Intelligent temperature control, convenient to use. 5. Imported lithium battery, far below the human body safety voltage, safe and healthy. 6. Unique pocket design, able to store power bank(not included), make you enjoy warmth anytime and anywhere. 7. Soft and warm inner velvet layer, more close fitting, let your winter no longer cold. 8. Easy to clean, can be washed by hands, it is recommended to wash in washing machine after putting into laundry bag. Specification: Item Type: Heating Underwear Material: Nylon Color: Black Optional Type: 01# M Top & Long Johns, 02# L Top & Long Johns, 03# XL Top & Long Johns, 04# 2XL Top & Long Johns, 05# 3XL Top & Long Johns, 06# M Top, 07# L Top, 08# XL Top, 09# 2XL Top, 10# 3XL Top, 11# M Long Johns, 12# L Long Johns, 13# XL Long Johns, 14# 2XL Long Johns, 15# 3XL Long Johns, 16# M Top & Long Johns, 17# L Top & Long Johns, 18# XL Top & Long Johns, 19# 2XL Top & Long Johns, 20# M Top, 21# L Top, 22# XL Top, 23# 2XL Top, 24# M Long Johns, 25# L Long Johns, 26# XL Long Johns, 27# 2XL Long Johns Male Size: Size Shoulder (cm/inch) Length (cm/inch) Waist (cm/inch) Sleeve (cm/inch) Pants Length (cm/inch) Pants Waist (cm/inch) M 41.5/16.3 68/26.8 88/34.6 55.5/21.9 94.5/37.2 68/26.8 L 42.5/16.7 69/27.2 92/36.2 56/22.0 95.5/37.6 72/28.3 XL 43.5/17.1 70/27.6 96/37.8 56.5/22.2 96.5/38.0 76/29.9 XXL 44.5/17.5 71/28.0 100/39.4 100/39.4 97.5/38.4 80/31.5 XXXL 45.5/17.9 72/28.3 104/40.9 57.5/22.6 98.5/38.8 84/33.1 Female Size: Size Shoulder (cm/inch) Length (cm/inch) Waist (cm/inch) Sleeve (cm/inch) Pants Length (cm/inch) Pants Waist (cm/inch) S 32/12.6 56.5/22.2 67/26.4 55.5/21.9 94.5/37.2 68/26.8 M 33/13.0 57.5/22.6 71/28.0 56/22.0 95.5/37.6 72/28.3 L 34/13.4 58.5/23.0 75/29.5 56.5/22.2 96.5/38.0 76/29.9 XL 35/13.8 59.5/23.4 79/31.1 57/22.4 97.5/38.4 80/31.5 XXL 36/14.2 60.5/23.8 83/32.7 57.5/22.6 98.5/38.8 84/33.1 Power Bank Size: 10 * 6 * 4cm / 3.9 * 2.4 * 1.6inch( Not Included ) Package Weight: Approx. 401-1286g Package List: 1 * Top(06#, 07#, 08#, 09#, 10#, 20#, 21#, 22#, 23#) 1 * Long Johns(11#, 12#, 13#, 14#, 15#, 24#, 25#, 26#, 27#) 1 * Top & Long Johns Set(01#, 02#, 03#, 04#, 05#, 16#, 17#, 18#, 19#) Note: Power bank is not included. 01# - 15# for men, 16# - 27# for women.