Review on Humidity Packs (10 Pack / 8 Grams), 62% RH FreshDank, 2-Way Control for Optimal Product Freshness by Essential Values by William Belczyk

Not sure what the thickness has to do with the product but for some reason it was in the test questions? I followed the directions but found that the bags only keep the humidity at 51-53%. They were used in one liter glass jars kept in a dark cupboard at an ambient temperature of about 70 °C. I've even tried multiple packs in the same tin and it didn't increase the moisture more than 1 pack. They've been in the jar for 48 hours and still haven't raised the humidity to the level stated on the packaging. I would not recommend anyone to buy with the expectation that they will keep the humidity level at the level stated on the packaging. FYI, the humidity in my area is between 40% and 60%. It's not like I'm in a very dry area.