Sun protection clothing originated in Australia as a result of that nation's awareness of its epidemic of skin cancer and its determination to fight it. In Australia, the anti-skin cancer campaign was originally focused on prevention (by targeting messages at children) and on early detection (by targeting seniors).
As a result the market for sun protection clothing for children grew dramatically. Now, most children in Australia wear sun protective swimwear or beachwear. Most also wear protective sportswear and have sun protection garments included in school uniforms.
In the United States, despite an epidemic in skin cancers, these trends are almost exactly opposite. The main buyers of sun protective clothing in the US are people forty or over, especially people who have experience health problems from sun exposure, want to prevent a recurrence, and have received medical advice from their doctors.
We suspect that the main reason for the difference is that in the United States, there is no on-going national skin cancer campaign focused on the prevention and detection of skin cancer. Although sun safe curricula is available through the EPA and various sun safe organizations, they are optional. And, they're not backed-up by an on-going national message. Despite the efforts of so many well-meaning organizations and individuals, the overall message is ad hoc.
With recent media attention directed at protecting children from sun exposure, we hope to see a change in these trends. That is, we hope to see more and more parents buying sun protective clothing for their children (and for themselves before a medical event pushes them in that direction). Unfortunately, however, most advice on protecting children seems to focus on sunscreen with sun protection clothing coming in a distinct second. For all age groups, sun protective clothing is the first and best line of defense against skin cancer.