Unfortunately, one size doesn't always fit all. The Aqua Design Men's ProMax Face Mask is available in two sizes for a better fit. The adjustable hook and loop strap adjustment tab coupled with the headband helps to keep the mask in place. With or without a hat, your mask will stay in place. It even works great with wide-brimmed hats. Plus, the laser cut mouth and nose vents give you a more breathable mask that reduces fogging on your glasses. Aqua Design's Exclusive UPF 50+ 3D water print camouflage fabric in our signature Aqua Sky color. While playing in the sun, it is easy to forget to reapply your sunscreen. With the Aqua Design Men's ProMax UV Vented Camo Adjustable Face Mask, the UV protection is naturally built into the fabric without chemicals. Stay safe from the sun and enjoy the outdoors longer with a long saddle to cover your face and neck. Add sunglasses and a hat, and you'll be set for those bright, sunny days. Regardless of the weather, the Aqua Design ProMax Face Mask will be there to guard against those harmful UV rays that can penetrate even amidst overcast skies. Choose face mask size based on the chart below: M/S size for head circumference 22 1/4" or smaller, hat size 7 1/8 or less; XL/L size for head circumference 22 3/8" or larger, hat size 7 1/4 or more. Note: Cap/hat and shirt pictured not included.