A snug layer for boogie boarding and cannonball practicing with smart UPF 50 sun protection (think of UPF as SPF, but for fabrics-it's recommended by the Skin Cancer Foundation as an effective UV protectant, but remember, nothing is 100 percent effective against sunburn, so make sure to have sunblock on hand as well). Finally, a solution to the never-ending battle of kids versus sunblock-it makes moms' lives easier and keeps kids covered. Nylon/Lycra® spandex. Lined. Hand wash. Import. Online only. Size & Fit Details size charts