The Keis B601RP Ultraflex heated vest is a thin mid-layer garment designed from the ground up, using specially designed textiles and an enhanced heating system. It delivers maximum comfort and superior heating efficiency - featuring UltraFlex technology. This B601RP bodywarmer features a much thinner material structure than the alternative soft-shell V501RP heated vest and B501WRP ladies heated bodywarmer - it is designed to fit between the wearer's base layer and their outer motorcycle jacket when there is not a lot of space to accommodate a mid-layer heated garment. The unique UltraFlex material also provides generous elastic 4-way stretch, moulding the garment to the wearer’s body contours for a snug fit without restricting movement. Microcarbon fibre heat pads for advanced heat radiation provide an even layer of heat across the chest, back, and collar areas. It also features power output sockets in both armpits and built into the inside waistband. These allows the user to connect and power a pair of Keis heated gloves (using the vest-to-glove power leads), and/or a Keis heated trouser, socks, or boot insoles. Add these additional heated garments to your jacket to build your luxurious, fully integrated heated solution.