Just a heads up

There is a coloured bag being sold on the market which comes in various colours which has been failing.
It has been worked out if the bag owner puts the bag into full sun in high temperatures and has had all the air removed it then swells (expands) in the heat.
If placed in water by accident it cools rapidly and sucks water into the bag as these do not have a proper seal they are just a folded over lip.Valuables such as mobiles and electronic equipment is at risk of damage.