MICROWAVE, OVEN & AIR FRYER SAFE — ALWAYS LIDS OFF: The borosilicate glass reheats and cooks straight from the fridge — microwave, oven or air fryer, rated to 300°C/572°F — and freezes to -20°C. The lid never goes in. Take it off first, every time: glass in, lid out. Even with the vent open, microwave heat warps the lid and costs it its seal — cover the food loosely with cling film instead. And never move a container from the freezer into an already-hot oven; let it reach room temperature first. PREP FIVE WEEKDAY MEALS — 5 x 850ml, ONE SIZE: Five identical 850ml containers, each 19.5 x 13.5 x 7cm with the lid on — the figure to check against your lunch bag, fridge shelf or drawer. Without the lid the glass measures 18.4 x 12.6 x 6cm, which is the one that decides whether it fits an air fryer basket or oven shelf. 850ml is one balanced adult meal, not a snack pot. One consistent size means they stack square, portion the same every time, and every lid fits every base. AIRTIGHT AND ACTUALLY LEAKPROOF: Close the vent and the silicone seal locks airtight — soup, curry and dressing travel upright in a bag without a leak. Flip the vent open and steam escapes instead of condensing, so rice, roast veg and pasta don't go soggy overnight. Two settings, one lid: sealed for carrying, vented for cooling. The vent is never for heating — the lid comes off completely for the microwave and oven. LIDS THAT CLOSE PROPERLY — AND KEEP CLOSING: Press each clip down until it clicks; that click is the silicone seal engaging, and it is what stops leaks. The glass bases are dishwasher safe. Hand-wash the lids in warm soapy water — sustained dishwasher heat is what warps snap lids and costs them their seal, so hand-washing is exactly what keeps yours sealing years from now. The seal lifts out for cleaning, so nothing is trapped underneath. OROSILICATE, NOT ORDINARY GLASS: Borosilicate takes the temperature change that cracks ordinary glass — fridge to oven, freezer to worktop — which is why this set can be oven and air fryer safe to 300°C/572°F at all. Unlike plastic tubs it won't stain, warp or hold smells, and it won't take on last week's curry. 100% BPA-free and LFGB-tested. From a UK brand of 10+ years, with a free meal-prep recipe ebook and a 2-year GOOD FOR YOU guarantee.
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