Amazon.com | Crocs Unisex-Adult General Mills Monster Cereal 。The Crocs x General Mills Monster Cereals Boo Berry Clogs in Men’s size 8 and Women’s size 10 are a limited edition collaboration featuring a solid blue color with a slip-on closure. These clogs are designed with a Boo character and are part of the Monster Cereals collection. Made of rubber and featuring standard shoe width, these comfortable and breathable clogs are perfect for casual wear in all seasons. The retro theme and character details make them a fun and festive addition to any wardrobe.