Urekt Matte Black Glass Jars with Child Resistant Caps, 3 Pack of 6 oz, 180 ml Each

The cap is what sets these apart: press it down, turn to the right, and it releases. Left alone it resists small hands, which is the reason the maker fits one instead of a plain screw top. It is moulded plastic, unlike the glass beneath it.

Each jar holds 6 oz, given as 180 ml, in matte black glass described as blocking light. A clear window runs down one side so the level can be read without unsealing anything. Three come in the pack, and the listing calls them odour proof and waterproof.

Sizes are quoted twice and disagree slightly: 2.16 by 2.16 by 4.45 inches in the attribute block, 4.41 inches tall by 2.2 across in the description. Either way these are small jars, scaled for spices, loose tea or ground coffee rather than flour or pasta. Pack weight is recorded as 0.54 kg. Claims that the glass will survive breaks and drops should be discounted; handle it as you would any glass jar.

• Three jars, 6 oz (180 ml) each
• Roughly 2.2 in across, 4.4 in tall
• Matte black glass with a clear viewing window
• Plastic child-resistant cap, press then turn
• Described as airtight, odour proof and waterproof
• Pack weight given as 0.54 kg