OnOur black Skin Cooler fabric keeps you just as cool as the white. It inherently has a reflective virtue that is created by a combination of the fibers, the fiber content, and the special way the fabric is knitted. Once the black fabric gets wet it keeps you cool in hot weather.  Features and benefits: Pocket on the front fits credit cards, ID, dollar bill, most car keys and even a slim MP3 player, or Ipod Shuffle Pocket is low profile with no velcro Items stay in place from the innovative design and shape of the pocket A plastic brim makes this cap machine washer friendly Nanosurf and Skin Cooler mesh keep you cool and comfortable while providing protection from the sun Adjustable velcro closure to give you a comfortable fit One size fits most Live Images Pocket detail What makes ours different? Our Skin Cooler fiber is designed to feel and perform like silk (from a silk worm). Through Biomimicry, we and created a synthetic silk. It will keep you cool in hot weather and cooler when it is wet. Put it on and you will instantly feel the cool sensation. Wet it and you will notice a drop in the surface temperature of the skin between 7 and 10 degrees. Skin Cooler 90 Blocks 90% of UVB rays - When the human body gets hot, it sweats to cool itself. In the past, other brands have tried to help that process by developing fabrics that wick moisture away from the skin and expedite evaporation. For over 10 years now, De Soto has taken this concept a step further by using that moisture to create a cooling effect. YES! WE WANT YOU WET. Skin Cooler works by a series of channels knitted into light fabric. As these channels get wet, they absorb moisture and swell, which dissipates the heat making the fabric against your skin actually cooler. How much cooler depends on factors including airflow, humidity, ambient temperature, and moisture temperature. When you sweat, the garment’s temperature drops and creates an actual cooling sensation. Skin Cooler 90 offers this cooling effect while offering even more sun protection. We always recommend you wear sunscreen underneath these products. It is crucial to keep in mind that a sunscreen’s SPF/UPF rating refers only to its ability to protect skin from UVB radiation. Because we know that UVA damage can be just as insidious, it is essential for the health of your skin that you use a sunscreen that contains the UVA-protecting ingredients of titanium dioxide, zinc oxide, and/or avobenzone.