Developed in conjunction with riders antti autti risto mattila gretchen bleiler andy finch steve fisher and wyatt caldwell the shiv39s light weight and low profile make it the ultimate park and pipe helmet in mould construction fuses a tough polycarbonate outer shell with the helmet39s impact absorbing foam liner for extra durability without excess weight super cool vents pull cool fresh air into the helmet while pushing heat and stale air out helping you feel fresh all day wea