1)reuseable instant hot pack. 2)delivery: FedEx or FOB. 3)different design and size 4) with pendant or not 5)MOQ 500PCS Liquid heat pack, fantastic for gifts and promotion.1) To warm up : Press the metal plate inside the pack to start to heat, The liquid will be in crystalline particle, when the inside liquid become solid,the magic warmer will give instant heat up to approximate50- 57degrees. The ...