As an example of how accurate it can be: I have a scale that's supposed to be pretty accurate and shoots the electricity through my feet *and* my hands and it varies within 4% points over the course of a week. I'm pretty sure my body fat doesn't change *that* much during that time.
In the summertime the farmer cuts off the sheep s fleece. The fleece is then spun and made into WOOL. Clothes made from wool keep us warm. Clothes are made from lots of different materials. Some materials, like leather, are made from animal skins. Cotton and linen are made from plants. Other materials, such as polyester, are called 'man-made materials'. This is because they are not made from animal skins or plants.
Dress shirts are normally made from woven cloth, and are often accompanied by a jacket, collar sleeve, and tie, for example with a suit or formalwear, but shirts are also worn more casually.