The AS Colour Carrie Bag 1001 is a durable heavy duty carrie bag. One size: 42cm x 42cm. Features: reinforced shoulder straps, one large main compartment. It is made out of 100% cotton canvas. Cotton canvas is an excellent plain weave fabric made from cotton that is dense, firm, heavy, sturdy and durable. Canvas is so strong and sturdy it was once used exclusively for tents and boat sails. With 320GSM it is a mid weight carrie bag.