They help when out in the heat, but for maximum relief, use in conjunction with a Frogg Toggs "Chilly Dana" on your head.<a data-hook="product-link-linked" class="a-link-normal" href="/FroggToggs-Chilly-Dana-Cooling-Head-and-Neck-Sports-Bandana-Khaki/dp/B003JJEJ7Y/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">FroggToggs Chilly Dana Cooling Head and Neck Sports Bandana - Khaki</a>