Lenz Women's Heated Vest 1.0The warming women's vest protects the body from cooling down in the sensitive area at the level of the kidneys. The lithium packs (optionally available) are attached with press studs under the chest ribs and heat the sewn in heating element. The material guarantees maximum freedom of movement, is wind repellent and ensures a pleasant body climate. The slim fit guarantees direct heat transfer at the touch of a button when the vest is worn as a bottom