<P> Innovations in cleat technology continued to take place throughout the mid to late 20th century . In 1954 , the first modern football boots were made by Adidas . They were lighter , had a non-leather sole , an upper portion made from kangaroo skin , and included replaceable rubber or plastic studs , which could be screwed in at different lengths . Later , in the 1990s , Adidas introduced another innovation in the form of rubber blades instead of studs , which faced different directions and allowed for better grip . Today , different types of cleats exist for different surfaces : replaceable aluminum cleats which are worn in wet dirt , firm plastic cleats which are for regular surfaces , and short , plastic or rubber cleats for very hard surfaces . </P>
<P> Innovations in cleat technology continued to take place throughout the mid to late 20th century . In 1954 , the first modern football boots were made by Adidas . They were lighter , had a non-leather sole , an upper portion made from kangaroo skin , and included replaceable rubber or plastic studs , which could be screwed in at different lengths . Later , in the 1990s , Adidas introduced another innovation in the form of rubber blades instead of studs , which faced different directions and allowed for better grip . Today , different types of cleats exist for different surfaces : replaceable aluminum cleats which are worn in wet dirt , firm plastic cleats which are for regular surfaces , and short , plastic or rubber cleats for very hard surfaces . </P>
what is the bottom of a cleat called
what is the bottom of a cleat called
studs
studs