washable material to make dog bed covers 4 rescues (Hockley B77)

Hi everyone I am looking for washable material suitable to make dog beds from for local animal rescues - it may be blankets - fleece blankets -duvet covers - sheets - curtains- large towels or just fabric - needs to be bigger than 1.5 m x 1m as that is size of cover - washable - durable so dogs cant rip ! please ask friends and family - I dont drive so need it delivered to B77 5ex if at all possible - if you have a large amount may be able to arrange collection - many thanks