Childrens Mid Layers
Even though children often do not 'feel' the cold as much as adults, their bodies are more susceptible to it and cool a lot quicker due to having a lower body mass. Dressing your child up in layers of everyday clothing will keep them warm for a while, but you will usually find it is extremely bulky and the high cotton content in modern childrens clothing will act like a sponge and hold on to any water or moisture present, increasing the chilling rate of your childs body. The best way to protect your child against the cold is to get them to wear the appropriate thermal base layers and thermal mid layers for the outdoor activity. For spring and autumn weather then you can often just get away with using a good base layer under a woolen jumper and decent outdoor jacket . When the temperature starts to dip in the winter, then you really should start to layer up the base layer with a good thermal mid layer.
Meraklon thermal mid layers are ideal for children as they have a soft cotton feel to them, and are easily washed and quick to dry. The hypoallergenic nature of the yarn and lack of chemical treatments on the fabric makes these thermal mid layers kind on childrens skin, especially those with skin allergies such as eczema.