I made mine out of 4.5m of jersey, 65 or 70cm high. Cost me about $15 from spotlight and the fabric was high enough to make 2. Didn't need to hem it.

Only thing is stretchy wraps are hot, if you look on fb there are babywearing groups where ppl sell second hand wraps, there might be cooler ones for sale?

sent from my watzamajig so may not make sense....