oh no 40cm insnt to long hon...fold it the other way and you get 4 layers instead so on big booster that is 30cm long and still 10cm wide but more compact boosting.

prefolds are easy...love making them but I tend to get a strip of bamboo in the middle and 2 layhers of toweling either side.

Ive just made a nappy for a fellow BB girl as a pressy for her daughter....cant wait for her to get it