This innovation made of natural resources, water hyacinth is dried instead of using replacement foam,which causes environmental pollution.It’s called Temperature storage bottle.This device consists of 2 layers : Inner and Outer.Outer is made from plastic with colorful pattern and the inner is made from dried water hyacinth which is qualified in Temperature storage bottle.It’s lightweight, biodegradable and eco-friendly .It’s a great way to save water temperature:hot and cold water.Temperature storage bottle consists of a lid on top and adjustable strap in the side of device.Lifetime of Temperature storage bottle is about 1 year.It costs 399 THB.