Welsh inventions

alt=Grenn flannel shirt in front of red brick wall|thumb|Flannel shirts are often tartan|plaid. Flannel is a soft woven fabric of varying fineness. Flannel was originally made from carded wool or worsted yarn, but is now often made from either wool, cotton, or synthetic fiber. Flannel is commonly used to make tartan clothing, blankets, bed sheets, sleepwear, and several other uses.

type of rolling-element bearing that uses balls to reduce rotational friction and support radial and axial loads

boat with rigid hull and inflatable tubes