The Tilley Airflo® provides sun protection in a lighterweight construction. Tilley Airflo® designs incorporate mesh into the crown allowing coolness & comfort during hot days or strenuous activities. Engineered from Tilley Nylamtium®, a strong water-&-mildew resistant form of nylon. The LTM5 is the Airflo® version of our LT5 Hat. It has a semi-sloping front & back brim & a relatively high crown. GUARANTEED FOR LIFE INSURED AGAINST LOSS EXCELLENT SUN PROTECTION REPELS RAIN TIES ON IN THE WIND MACHINE WASHABLE (WON`T SHRINK) Measurements: Front Brim: 2 5/8, Back: 2 3/4, Sides: 2 1/8 To find your hat size, use a tape measure & draw it right around your head, just above the eyebrows.HERE'S WHY TILLEY HATS ARE ACKNOWLEDGED 'THE BEST IN THE WORLD.' APPEARANCE & COMFORT: To protect you from the sun & rain, Tilleys fit lower than other hats. This also tends to give one a rather dashing appearance! For your comfort, they're held on by gravity, not painful pressure on your forehead. On a hot muggy day, you'll especially appreciate this! Even though they fit gently, Tilleys won't fly off because when there's a breeze, you use one or both parts of the tuckaway Wind Cord (see TIES ON below).GUARANTEED FOR LIFE: Tilleys are replaced free if they ever wear out, shrink or fall apart. They're so carefully handcrafted by us in Canada, & made from such strong materials, that many outlive their owners. Final words in the Owner's Manual? Pass it on!INSURED AGAINST LOSS: We understand the anguish of losing this reliable companion, or of having your dog terminally gnaw it. Should that happen, we'll replace your late, lamented Tilley at half the catalogue price. With your Hat, you'll be provided with The Straight-Shooter's Statement of Loss of a Tilley Hat insurance policy. The insurance is for two years, all perils, 50% deductible, & is not issued by Lloyds.FLOATS: A layer of closed-cell foam in the crown, & sometimes in the brim, provides the Tilley's positive buoyancy.TIES ON: The Tilley comes with a tuckaway, adjustable, fore 'n' aft Wind Cord. When it's calm, the Wind Cord stays hidden in the crown. When there's a breeze, place the part with the sliding knots behind your head. When it's windy or you're sailing, use the chin part too.REPELS RAIN: Not perfectly but usually quite adequately. Happily, the brims of the cotton-duck Tilleys actually become stiffer when they get wet, not floppier, helping to protect your neck, face & glasses. The Lighterweight Nylamtium® Tilleys are excellent at repelling rain.HYDROFIL® ANTI-SWEAT BAND: Soft & comfortable, it picks up sweat from your forehead & wicks it away to your temple area where it evaporates.CERTIFIED SUN PROTECTION: The fabric of all Tilley Hats have been certified to block 98 percent of harmful UVA/UVB radiation & deliver an ultraviolet factor (UPF) of 50+, the maximum rating given. You still need SPF 15 sunscreen & 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 & retinal problems later in life & has happened in my (Alex Tilley's) own family. Yes, Dorothy, there can be truth in advertising. For instance, although our Hats block 98% of UV rays, some rays COULD enter through the ventilation grommets & the slim layer of mesh in our Airflo® Hats. Certified Sun Protective Hat SECRET POCKET: Inside the crown is a good-sized pocket sealed with Ve