In the wake of the near-Baltic temperatures, we are looking for cosy accessories to keep us swathed in warmth. Cashmere knitwear, gloves and thermal leggings are all credible options, but at home, before bed, nothing does the trick quite like a long hot water bottle.
Hot water bottles have been warming beds since the 16th Century. Early versions contained hot coals to provide a blanket of warmth under the sheets and were typically constructed from metal, ceramics or wood.
