Our super cosy original handmade, roll-neck, natural bamboo hot water bottle.  The UK handmade cover is lined with natural cotton and filled with bamboo to give it a thick and warm finish.  All products also come complete with a 2-litre natural rubber hot water bottle (originally sourced from China). And what's more, all our covers are handmade right here in the United Kingdom.  Cover material;  70% bamboo viscose 30% organic cotton. ProEco Fleece Proprietary blend of bamboo viscose and organic cotton fibres BPA, PFAS & PFOA Free, Organic, CPSIA Compliant, Hypo-allergenic, Child Safe