?SUPERIOR SUN BLOCKING: Material passed UPF 50+ test which is real UV protective. Combined with Wide and Long Visor Design, Your Head, Face, Nose and Front Neck can be well covered. It protects your from sun burn better. Great choice for regular daily use and outdoor activities especially like bush walking, fishing,running,hitch-hike travel, baseball,cycling, golf, tennis. ?PORTABLE&QUICK DRY:The cap crown is unstructured and be folded to small volume.Take it with you to everywhere and will not occupy too much space. This hat can also dry out very fast after washing to enable everyday use. Both features bring you a lot of convenience during use. ?BREATHABLE&WATER RESISTANT:Moisture absorption and sweat discharge feature can keep your head dry and comfortable . Strong mesh panels design on both sides are beneficial to ventilate. Extra eyelets also increase the air flow. You will not feel stuff when wearing our hat. It??s waterproof feature can temporarily help you out if you are caught up with the rain. ?COMFORTABLE& ADJUSTABLE: Inside sweat band is very soft and cozy. The back closure is combined with stretch strap and snap in buckle. Flexible strap can fit your head girth better and offer you a custom fit. You will not feel too tight or too loose. And you only need to adjust the size once and for ever.It is also more durable and comfortable than Snap-back closure. ?LARGE SIZE(L/XL):Numeric Size:7-1/4”-8-3/4”; For head girth:22-7/8????-24-1/4????(58cm-62cm).Cap depth:4-5/16?? (11cm) Bill length in the middle??3-3/4??(9.5cm) It is a bonus for big head. Need more help. Please read our size guidance in description.