Puffy / Hot water bottle

Hot water bottles are one of the most ancient and cheapest way of getting warm in winter days. It is generally produced from natural rubber which causes bad smell and transfers heat quickly. Using polyisoprene, odorless synthetic plastic, as a base material odor problem has been solved. Also air is the least thermal conductive material so the two layered design filled with air results in gently transfer of heat. Flocked outer surface invites touch and thermochromic particles gives information about the heat conditions of the product.