Tilley lightweight (3 oz) LT5B Hats. Made with 93% nylon, 7% spandex with durable weather and stain repellent finish. It is tightly woven for high abrasion resistance, better shape retention, high breathability and superior comfort. A new moisture wicking sweatband made with TRANSPOR DRY LAYER offers superior moisture control technology. New wind cord made of nylon with reflective tape that illuminate in the dark. Matt black grommets and eyelets, double plated to ensure it will not chip-off. The Breathable Nylon Bucket Hats have been tested and certified as having a UPF 50+, the maximum UV protection rating given. The LT5B Breathable Nylon Hat is styled with the medium, semi-sloping brim size of the Tilley LTM5 and T5 Cotton duck models. Brim Measurements: Front 2 5/8 inches Back 2 3/4 inches Sides: 2 1/8 inches. HOW TO MEASURE YOUR HEAD: As mentioned above, a Tilley Hat fits lower and more comfortably than other hats. The lower it sits, the larger at that point is one"s head circumference. To find your Tilley size, simply measure around your head, just above the eyebrows. If you already know your regular hat size, please ask for one size larger when you order your Tilley. WASHING INSTRUCTIONS: Machine wash on delicate cycle or hand wash in cool water. Do not use bleach. Smooth and reshape the Hat by hand and set it out to air dry. Wash it frequently or non-removable sweat stains will mar it and discolor fabric. Sizes: 6 7/8 to 8+. Colors: Stone with Taupe under brim or Solid Taupe. Please note: This hat is only available by Special Order. Special orders take about 8-10 days to ship.