Amazon.com: HUAMULAN 6。Experience advanced cooling technology and maximum sun protection with this versatile sun hat. Designed for outdoor activities like hiking, fishing, beach trips, and gardening, it keeps you comfortable and shielded from harmful UV rays. Condition: Brand new 1. Measurements Circumference 20.5-24.5 inches 2. Features ? Water & Sweat Activated Technology – absorbs water or sweat to cool the hat by up to 30 degrees in under 1 minute; stays cool for 2+ hours with reactivation ?️ UPF 50 Sun Protection – blocks 98% of harmful UV rays for reliable defense during outdoor adventures ? Breathable & Lightweight Design – crafted with breathable, lightweight fabric that maximizes airflow and comfort all day ? Unisex Fit – pull-on design with adjustable neck cord, fits most adult head sizes from 6 1/2 to 7 3/4 ? Washable & Odor Free – machine washable with built-in odor resistance; cooling technology never washes out ? Performance & Comfort – extended neck nape coverage and premium design keep you cool while hiking, fishing, or gardening fast shipping, smoke-free home, bundle & save QjBDUE5KTEZYUw==