Heated Baselayer - Regular Fit for Men and Women - Black Without powerbank: Works with 2 powerbanks (not included) 1 heating level, on/off switch Up to 3 hours of non-stop heating Compatible with all powerbanks with USB-C output, extra batteries available in the 30seven store Flexible heat: control the upper part with the right powerbank, control the lower part with the left powerbank Rapid power: Works with 2 powerbanks (included) 1 heating level, on/off switch Up to 3 hours of non-stop heating Compatible with all powerbanks with USB-C output, extra batteries available in the 30seven store 2 powerbanks + chargers included (dual charger available separately) Flexible heat: control the upper part with the right powerbank, control the lower part with the left powerbank Features: Without collar which makes it perfect to wear underneath your clothes and feel the heat close to your body Stretchable mesh fabric for a tight fitting Moisture-wicking mesh: draws moisture away from the body Breathable fabric Centre front closure, full length YKK-zipper Hot spots: neck, shoulders, kidneys and lower back 2 exterior pockets : battery connections in pockets with hidden zipper Heating element integrated in the base layer Specifications: Material: Shell: 100% polyester Lining: 100% polyester Note: Women should size-down 1 size for the perfect fit. (E.g.: if you have size M, buy size S) Care Instructions: Washable on cold program (30°C) Do not dry clean or do not use dry-cleaning fluid Do not bleach Do not iron 30seven Heated Regular Fit Baselayer Vest - 5 Volt