Sometimes, two brands are so perfectly matched that a collaboration seems inevitable! Introducing the YUYU + Wallace Sewell collection... YUYU reinvented the hot water bottle, creating an ergonomic and more effective design that is as stylish as it is practical. The extra-long rubber bottles mean they can wrap around and keep more of you warm, but the clever design means you still only need the same amount of water to fill it! The Wallace Sewell YUYU covers are 100% Lambswool with a pixelated design from our Pinstripe collection.