Single Neck StrapClear blue facepiece subtracts 25% of the weight and adds noticeable softness to give workers more comfort and stability than everAnthroCurve ™ sealing surface, which instantly conforms to each wearer's unique facial characteristicsThe unmatched fit and comfort start with a soft, pliable combination of rubber and plastic that provides a virtually customized fitPatented MultiFlex® system equalizes pressure on the face-seal area while delivering exceptional stabilityNIOSH approved