The heat vest 2.0 is our first heated product with flexible heating elements. Thanks to the Velcro system, the heating elements can be attached exactly where the heat is needed. The vest is therefore the perfect source of warmth for sports, work or acute tension. Features: Heated men's vest with flexible heat pads Up to four heat pads can be variably attached to the vest using Velcro fasteners Heats where the heat is needed: shoulders, neck, upper and lower back Lithium packs are attached to the heat pads using snap fasteners Compatible with all Lenz lithium packs (optionally available) Machine washable at 30 degrees Outer Fabric: 87% polyamide 13% elastane Interior Fabric: 100% polyamide Package Contents: 1 heat vest 2.0 men + 2 pcs. heat pads (lithium packs not included)