The blaze rider sports gilet 

Waterproof and windproof nylon outer in black with red side panels with extra light polyester thermal interior to provide extra warmth.
Exterior top zip pocket, adjustable waist and embroidered logo to front.
Can be worn as a mid layer or outer layer and is strong durable, practical and very stylish.
Sizes xs - xxl

Heating area in both sides of chest and also lower back.
Double zip for comfort when seated

• Supplied with rechargeable battery pack with charger.
• 5 heat settings temp. control.
• On/off switch allows heat to be turned off if too warm.
• 1.75 to 4.75 Hours continuous heating time (adjustable heat control)
• Double capacity battery option
• Optional in-car charger

** See review below from Dec issue of showing world

Click here for an explanation of battery options