All fingers are warmed thanks to the Lenz heating element on the top. The unisex mitten provides up to 11 hours of warmth. The optionally available lithium packs are attached to the glove via press studs. The heat can be easily determined on the lithium pack or via the free Lenz heat app on your smartphone. PrimaLoft® and Hippora® offer reliable protection against the cold and are waterproof and breathable at the same time. The heat 4.0 mittens unisex also has an element for cleaning glasses, an elastic safety loop and is touchscreen compatible.