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U-Konserve Insulated Food Jar 475 ml


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U-Konserve insulated food jars are designed to keep your food steaming hot for up to 5 hours or icy cold for up to 8 hours! The stainless steel jars are entirely leak-poof, allowing them to be kept in school bags/hand bags with ease. It is recommended that you pre-heat your food jar with boiling water before pouring in hot contents and that you pre-chill the food jar in the freezer (lid off) before putting in cool contents. This will ensure that the jar maintains the temperature for as long as possible. 

Dimensions: Height: 16.5 cm, Diameter: 8.9 cm, Volume: 475 ml (16 oz)

Making a difference

  • U-Konserve are a certified B Corporation - meeting rigorous standards of social and environmental performance, accountability and transparency
  • 1% for the Planet member - 1% of U-Konserve's total sales are donated to environmental organisations
  • Support, discounts and advice are offered to schools (in the USA) to promote zero-waste
  • Reusable and waste free - reducing landfill from single-use food packing options


  • Leak-proof lid
  • Double-walled and vacuum insulated
  • Dishwasher safe
  • Exterior is cool when filled with hot foods and moisture-free when filled with cold foods
  • Container: 304 (18/8) stainless steel, lid/base: PP #5 plastic, seal: silicone
  • BPA-free, phthalate-free and lead-free


U-Konserve is an American company that was created by two mothers who were sick of packing school lunches full of single-use plastic they knew was going to end up in landfill. Their goal was to provide durable, good-quality, reusable alternatives for food storage. U-Konserve are a certified B corporation. They also donate 1% of their annual profits to non-profit organisations that benefit the planet.