This snug fitting unisex thermal base layer garment has plenty of stretch (100%) which makes it feel as comfortable as a second skin & allows for a close comfortable fit for most body shapes. The stretch, coupled with long cut, will prevent the garment from rucking up under active conditions that may cause discomfort & cold spots on the lower back. The super efficient hydrophilic finish will wick perspiration away, leaving your skin feeling warm & dry. The st&-up double thickness turtleneck features a 18cm long zip that finishes just under the chin. This is an ideal thermal base layer suitable for all outdoor sports where extra neck protection is required but also giving you the option of venting yourself if you should overheat. For extreme temperature use in conjunction with the Factor 2 range of mid-layer thermals. For a more detailed size chart please visit our technical information pages.