Insulated bag for water bottles

You are looking for a solution to make your aluminum bottle isothermal: With sheep's wool, linen and hemp for a 100% natural and organic product. Insulated bag made especially for square and concave water bottles Le Grand Tétras But you can also use it with 75 cl wine bottles or classic gourds up to 1 litre. With the "Frosted sheep" bag, your water bottle stays cool for 4 to 6 hours, warm for up to 4 hours.