It is important that you take care of your wellies in order to prolong their life: 

DO NOT leave your wellies in direct sunlight.

DO NOT store them outside.

DO keep them indoors in a cool, dry place.

DO NOT put your wellies on a radiator or boiler to dry, as this may cause them to split.

Prolonged exposure to hot sun or freezing conditions may make the rubber perish, crack and split.

To clean your wellies, use water and leave them to dry in a cool, dry place.

When removing your wellies do not use a step or the toe of your other boot to remove them as this will cause stress to rubber joints and may result in the boots splitting.