Welly Traveller Vacuum Insulated & Infusing Stainless Steel Bamboo Water Bottle The Welly Traveller Vacuum Insulated & Infusing Stainless Steel Bamboo Water Bottle ($33) keeps drinks cold for up 24 hours or hot for up to six hours and includes a removable infuser for brewing tea on the go or naturally flavouring water. Image Source: amazon.com Welly Traveller Vacuum Insulated & Infusing Stainless Steel Bamboo Water $33 from amazon.com Buy Now