AH5 Battery-powered heating insoles Cold feet? Never again Trend's compact heating insoles offer 3 heating positions and a high heating capacity with continuous heating for up to 16 hours at an affordable price. The insole heater is connected to the battery by a tried-and-tested cable with plug. The rechargeable battery is attached to the shoe or belt by means of a cover or Velcro fastener. Benefits: Attaches with clips or elastic Velcro straps (AC9) Warm-up time up to 16 hours (depending on batteries used) Integrated heating elements on toe Features: 5mm polyurethane foam sole, ready-to-cut from size 32 to 47.5 (IS4a) Battery pack 64 x 30 x 80 mm / 60g (without battery) (BP5a), DC plug 5mm polyurethane foam sole, ready-to-cut from size 32 to 47.5 (IS4a) Can be used with all AA batteries (rechargeable or disposable)