Thank goodness for Red Dingo! I have large male cats and found it very difficult to get collars that were large enough - until I discovered Red Dingo! So many sellers only have sparkly little collars which may be ok for small lap cats, but mine are big boys and spend a lot of time outdoors hunting etc and so need proper collars. These collars are a good long length and adjustable (20-30cms), good quality/thickness, with reflective design, integral bell, room for a name disc and have the all-important safety release. And they are still quite light, not too heavy for a cats neck. Although these are not the cheapest collars they are worth the money and I think I will probably always buy Red Dingo in future!