The LTM6 AIRFLO Tilley Hat is designed with a wide brim and 3/4" polyester mesh built into the crown. This lightweight Hat offers superb ventilation and is made from Tilley Nylamtium, a strong water-and-mildew resistant form of nylon.
The fabrics of all Tilley Hats have been certified to block 98 percent of harmful UVA/UVB radiation and deliver an ultraviolet factor (UPF) of 50+, the maximum rating given. You still need SPF 30 sunscreen and sunglasses with UV filters! Children especially need the UV filters in their sunglasses as non-filtering glasses will increase the size of their pupils, allowing even more of the damaging UV rays to enter. This often causes cataracts and retinal problems later in life and has happened in my (Alex Tilley's) own family. Yes, there can be truth in advertising. For instance, although our Hats block 98% of UV rays, some rays COULD enter through ¾" mesh. We hand-sew each hat using very strong thread; all seams are lock-stitched so they won't unravel. The brass is from Britain and is the best there is. All Hats are made with such care and dedication that one is as good as another. Your Tilley will be equal to that presented to a president or princess. ("Hi, Duke! How long have you had your Tilley?" could be an effective opener.)