Grog (clay) Grog, also known as firesand and chamotte, is a ceramic raw material. It has high percentage of silica and alumina. It can be produced by firing selected fire clays to high temperature before grinding and screening to specific particle sizes. It can also be produced from pitchers.
1 Excellent Support- Every single KURU athletic shoe offers the most supportive design available. Our HEELKRADLâ¢ feature centers the foot to cushion each strike of the heel and absorbs shock with each step.  Durable Construction- Long lasting, dependable shoes will improve your training on any surface.
Nike Air Force I leather sneakers. 10981. Nike's 'Air Force I' sneakers are one of the brand's most iconic styles. Made from panels of perforated and smooth white leather, this pair is set on an Air-sole for cushioning and has a rubber outsole for grip and durability.