Tour Master Synergy 2.0 Vest Liner The Synergy jacket and vest include a power lead wiring harness, temperature control unit and a thigh-mounted leg band to attach the temperature control unit. Features Designed to operate in all weather conditions from a vehicles 12-volt electrical system Warmth without bulk or discomfort, making for a safer, more enjoyable ride Lightweight, flexible steel fiber heating elements provide safe, even warmth Expanding side panels help fine tune the fit and increase comfort Water-resistant, single or dual rheostat available (dual rheostat included with jackets and vests) Vest with Collar Temp Setting Temp (F) Draw (W) Draw (A) Level 1 109.3 54 4.5 Level 2 137.8 54 4.5 Level 3 141.8 54 4.5 Level 4 152.6 54 4.5 Level 5 167.0 54 4.5 Vest Without Collar Temp Setting Temp (F) Draw (W) Draw (A) Level 1 109.3 48 4 Level 2 137.8 48 4 Level 3 141.8 48 4 Level 4 152.6 48 4 Level 5 167.0 48 4