Serfas E-LUME 1750 Aluminum Body Headwear The jacket features 3 layers

The jacket features 3 layers and a waterproof Gore-Tex® membrane

Heel bail with 3 height settings

Insulation: 650-fill Down RDS Cert/Fluorine Free

you can have ExOfficio Men's Give-N-Go 2

Serfas E-LUME 1750 Aluminum Body Headwear The jacket features 3 layersFeatures: All In One Design High Output Dual LEDs Extruded Aluminum Body Press and Hold Button Lock Daytime Flash Mode Up To 50 Hrs Runtime Integrated USB Rechargeable Li Ion Battery Backlit Button Indicates Charge Status and Low Battery Handlebar Bracket USB Charging Cable Specs: Solid Mode: Overdrive 1750 Lumens 2 hrs High 1000 Lumens 3. 5 hrs Medium 700 Lumens 6. 5 hrs Low 400 Lumens 9 hrs Flash Mode: Daytime Flash 1750 Lumens 50 hrs Low Flash 200