Layer it under your normal winter coat for an even more comfortable experience.

Features:

• Material: Polyester
• Lining: Polyester
• Filler: Eiderdown Cotton
• Color: Black
• Power Supply Interface: USB
  
• Power Supply: 5V/2A Mobile Power (power bank not included)
• Fever Area: Back
• Temperature Shift: Manual adjustment
• Warm: 45°C (Red Light)
• Comfort: 35°C (White Light)
• Energy Saving: 25°C (Blue Light)

Sizing Guide:

• S - Chest 32"- 34"
• M - Chest 34" - 36"
• L - Chest 36" - 38"
• XL - Chest 38" - 40"
• 2XL - Chest 40" - 42"
• 3XL -Chest 42" - 44"