Push-Key suspensions designed exclusively for MSA V-Gard? Industrial Safety Helmets. The Push-Key suspension with its innovative adjustment concept brings an extraordinary way to enhance user retention and comfort. Push-Key the new suspension with the best cost-benefit ratio offered in the market. MSA Push-Key suspension exclusive features and benefits EASE OF USE:, This is the fastest sliding suspension on the market: simple push to loosen, squeeze to tighten, Can be adjusted with one hand even when worn SURE FITTING:, It offers greater retention capacity than competitive sliding suspensions because it's so much easier to select the best adjustment position ADJUSTABILITY:, 2 levels of nape adjustment for fitting comfort, Designed to avoid interference with other PPE such as ear muffs SWEATBAND COMFORT:, 2 different options: sewn in PVC perforated wipeable or sweat-wicking foam, Also available Terry cotton washable sweatband, MSA696688 that can be used over both sewn in PVC or replaceable foam sweatbands for increased user comfort