The Tropic™ 504 Ventair cap gets its name from a unique place — the number of the original block shape from which it's made. The Tropic™ yarn make this an ultra-lightweight cap that is the perfect choice for spring and summer wear. This cap has our signature embroidered kangaroo logo on the back of the cap in a contrast color, meeting our high expectations for quality and style and adding the iconic kangaroo to make it official. Check out our many options for color and sizes below.