Heatbag

A clay core sealed inside a recycled memory foam cover lined in soft jersey. The filling is natural clay, glycerin and water rather than water alone, which is why it holds temperature for up to two hours and gives it back slowly. Two sides, deliberately different: the cushioned one for gradual warmth, the thinner one when you want the heat concentrated. Under a minute in the microwave, or an hour in the freezer.

It's built to be hugged rather than applied, which is the difference between a heating pad and this.

Good to know

• 13.7 by 7.5 by 2.9 inches, 1.6 lb
• Midnight grey
• Natural clay, glycerin and water core
• Recycled foam cover in viscose and elastane, machine wash cold and air dry
• Hot or cold, holds temperature up to two hours
• Clay bag is FDA and CE registered
• Not permitted in carry-on luggage