- Full custom, Pro-Style Wool Blend (80% Acrylic / 20% Wool) Adjustable Black Cap with Shaka logo in classic "Diver Down" design in Red & White (a diver down flag is used on the water to indicate that there is a diver in the waters below). Custom VH07V and Hawaiian Island chain on black under-visor. 6-panel Flat visor cap with fused buckram sewn into the crown. 3.75" crown, 6 sewn eyelets, 8 rows of stitching on visor. Adjustable strap. One Size Fits All. Fish, fishing.