Each side of the double, queen, and king blankets has an individual controller, which features 4 different heat-zone options that operate simultaneously. For single and king single sizes, the controller is positioned on the right-hand side. The controller allows you to set-up varied heat levels - even between your torso and feet. Sizes with controls on both sides may apply completely separate temperatures. Please note: This product cannot be shipped outside of Australia. Size Guide: Single: LHB3001 90cm x 190cm + 50cm King Single: LHB3002B 107cm x 203cm + 50cm Double: LHB3003 137cm x 190cm + 50cm Queen: LHB3004 153cm x 200cm + 50cm King: LHB3005 180cm x 200cm + 50cm