The Extremities Guide Balaclava is versatile and made from a mid-weight Windstopper softshell which can be pulled down and worn as a neck gaiter. Features GORE-TEX Infinium with WINDSTOPPER® softshell Wears 3 ways: narrow face, full face or pull back as neck gaiter Perforated ear area to assist hearing More information How to choose a hat Technology GORE-TEX has produced a range of incredible fabric technologies that Extremities use in their performance gloves. Here’s where you’ll find out exactly what each of the technologies means. GORE-TEX Technology explained Specifications Performance Type Windproof, GORETEX Weight 58 g Fabric 100% Polyester Guarantee New Extremities products are guaranteed to the original owner for a period of 1 year from the date of purchase. Size Guide Hat Sizing Measure the circumference of your head at its widest point, just above the eyebrows and ears. Use the chart below to convert the measurement to our hat sizes. Hat Size Head Measurement X-Small 54 cm Small 56 cm Medium 58 cm Large 60 cm X-Large 62cm Small/Medium 56-58 cm Large/X-Large 59-62 cm