As part of the Sparco RW-10 Shield Pro range of underwear these long johns are constructed using a combination of lightweight, technical fabrics to offer high levels of heat and flame protection in accordance with the stringent FIA 8856-2018 and SFI 3.3 approvals.Totally seamless construction eliminates pressure points for unrivaled comfortHigh levels of heat and flame protectionX-Cool Silver treatment provides a cooling sensation on the skin and has anti-bacterial propertiesPrinted logos to keep weight to a minimumThe Sparco RW-10 Shield Pro long johns feature a seamless construction to eliminate pressure points and provide an optimum fit with increased levels of comfort whist reducing fatigue. The material is treated with Sparco's X-Cool Silver treatment which provides a cooling sensation on the skin, ideal for when the competition gets heated. The treatment also has anti-bacterial properties to reduce odours and has no negative effect on the safety protection.Sizes:XS - 70-77cm wais