Odlo I-thermic X-warm

"Experience the highest level of warmth and comfort with the I-Thermic X-Warm Base-Layer-Shirt 2.0 from Odlo. Specially developed for women, this innovative shirt offers excellent freedom of movement and a body-zone specific design that is perfect for skiing and other winter activities. Thanks to the breathable materials, the skin stays dry, while the improved moisture management ensures additional comfort."
"A particular highlight is the integrated heating system, which can be controlled via the Clim8 app. This allows you to direct the heat exactly where you need it most, directly from your smartphone. The app integration has been significantly improved compared to the previous model and the battery now lasts longer, making this base layer ideal for activities that alternate between active phases and breaks, whether on the ski lift, at a snack bar on the mountain or après-skiing."
"For adventures away from civilization, you can also set your comfort temperature manually via the rechargeable battery, which is safely stored in a special pocket. The slim fit cut ensures an optimal fit, while the intelligent thermal technology makes it unnecessary to put on and take off additional layers. Enjoy winter to the fullest with the I-Thermic X-Warm from Odlo."