Possibly the softest thing you have ever felt!
These fleecy liners keep babies bottom feeling dry as moisture is wicked away from the skin.  
 
Size 1 nappy fits babies from around 7lbs - 20lbs (3kgs - 9kgs) which is generally the age range newborn to nine months.
 
Size 2 fits babies from around 20lbs-38lbs (9kgs -17kgs) which should fit babies from about seven months to potty training.