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.
A blazer or sport coat can be an important part of a wardrobe. It can be dressed up with suit pants and a shirt and tie, or dressed down with khaki pants or jeans. Sport coats and jackets are made of the same types of fabrics, usually wool, though cheaper versions are available in cotton, corduroy and synthetic fabrics.