A Stainless Steel Ice Brick with a water core; designed to keep food and drinks colder for longer without the waste of gel or plastic ice packs. Practical, durable, and travel-ready, this reusable ice brick is ideal for lunch bags, cooler bags, and eskies - perfect for workdays, school lunches, picnics, road trips and those hot summer outings. Why You'll Love It: 304 food grade stainless steel outer with an efficient water core delivers long-lasting cooling performance. Slim, space-saving design fits easily alongside lunch boxes, snacks, and drink bottles. Durable and reusable - built for repeated freeze, use, and refreeze cycles. An eco-friendly alternative that helps reduce reliance on plastic reusable ice bricks. Easy to use! Freeze for 3–4 hours, then enjoy up to 5–6 hours of cooling depending on external temperatures. LFGB certified. Please note: light condensation may form during defrosting as cold meets warm air. For best results, wrap the ice brick in a soft cloth to reduce moisture inside lunch bags or lunch boxes.