Hate to be negative, but TBH these are very poor nappies. I hope you didn't pay much for them! The outers are PVC not PUL, and are not only hot to wear, but also will go hard quite quickly. The inners are cotton flanellette, and not very absorbent, but take ages to dry, as the plastic outer means they can only dry in one directon. The shape seems to fit very few babies, although if you have a chunky monster you may be lucky and find the fit is OK. Because of the plastic, you have to wash at a maximum of 40º,and you can't tumble dry.
Sorry to be negative, but you did ask! IMO, kushies are one of the nappies which do sa great disservice to the reputation of washable nappies, as they are one of the few available on the high street, but are such poor performers. They have never been upgraded or improved since their inception about 12 years ago, when they were the original shaped nappy, and a brilliant idea at the time!
This sounds really horrible - sorry! But my advice would be to resell them, do a trial of some other nappies before you buy anything, and then use the money you get from the re-sell to buy something you know will work and fit, and use the money to buy something b!