I don't have asthma myself, but I can't imagine a worse time to stress about not being able to find your inhaler than when you can't breathe, it's night time and you can't see your inhaler. The same thing probably occurred to the inventor of this Glow Cap. Made from a polymer compound, the cap needs a few minutes' exposure to sunlight to enable it to glow for up to 12 hours. The Glow Cap will also keep working for at least 10 years - £2.99
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