UGQ SKULLY What better way to keep that head of yours nice and toasty warm on those cold winter days than a SKULLY. The SKULLY features a unique four panel crown construction, moisture wicking spandex head band, DWR fabrics and 950WGD to ensure all day comfort. These products are handmade from scratch right at UGQ facility in Michigan, ensuring the highest quality craftsmanship. *Temp rating subjective based on end user Be sure to check and double check your measurements to avoid sizing errors. These are slightly snug fitting by design. It is important to start the whole process off by measuring your head properly. All you really need to get started is an accurate tape measure. Do not try and measure the inside of an existing hat that fits. You need to go right to the source and measure the circumference of your head to get an accurate foundation to start your search for the hat that fits properly. Place the tape measure just above you eyebrows and measure around the base of your skull. Be sure to include your ears in the measurement as the Skully is intended to cover your ears. If you measure a 21.5″ buy a S-22″, if you measure a 23.25″ buy a L-24″. DO NOT DOWN SIZE, the Skully will be snug and not fit properly. Size Med (23") Lg (24") XL (25") Fill 13g 950-WGD 14g 950-WGD 15g 950-WGD Inner Black M10/Dry wicking spandex Black M10/Dry wicking spandex Black M10/Dry wicking spandex Outer MRS20 MRS20 MRS20 Temp Rating 10° F - 30° F 10° F - 30° F 10° F - 30° F Finished Weight 30g/1.07oz 32g/1.14oz 34g/1.21oz