Christmas Hand Warmers - Red/White Christmas Trees Christmas Hand Warmers - Red/White Christmas Trees £3.00 Out of stock. 0 in your basket View Basket Checkout Pretty little reusable hand warmers, perfect for the school run. Just pop them in the microwave for 15-20 seconds to warm them up. Approx. 9cm x 9cm, wrapped in a jute cord with instruction label. Please make sure they are totally dry before warming.