Canvas Tent
A canvas tent to house the audience at a circus performance; "he was afraid of a fire in the circus tent"; "they had the big top up in less than an hour. Canvas comes from naturally derived fibers, usually either cotton (cotton plant) or linen (woven flax fibers). Other materials can also be used in canvas, as canvas refers to the type of weave as well as the material that makes up the weave. As such, many canvases also incorporate polyester into their structure in order to play off the benefits of the different materials (i.e., polyester provides better UV protection, strength and reduced water absorption).
Most canvas tents use a mixture of cotton and polyester in their material. Between different camping brands, canvas tents commonly differ in the relative mixture of materials they use, and the thicknesses of the canvas weave itself. A thicker canvas will be stronger than the thinner alternative, but it will also be more expensive, heavier and bulkier to pack up. Consequently, there is always a tradeoff between the durability, weight, and price. With the addition of other fibers and treatments it is also windproof, heavily waterproof and UV resistant, and is commonly used in garments or products when sturdiness is required. Other examples of canvases include backpacks, footwear, sails, and some industrial workplace clothing.
