The Bert Breathe Extension Strap from BlackRapid can be used to create an additional 15" of length to the existing webbing on an extendable BlackRapid Breathe-series strap. It features a male side-release buckle on one end and a female side-release buckle at the other. Taller or larger-framed users who require more length in a BlackRapid Breathe-series strap whose webbing is closed using a side-release buckle mechanism can first separate the male and female ends of that side-release buckle. A Bert Breathe Extension Strap can then be snapped into the extendable BlackRapid Breathe-series strap using the extension strap's male and female side-releases. The Bert Breathe is constructed from durable nylon. function selectTab(tabName) { document.getElementById('Overview').style.display = “none”; document.getElementById('Specs').style.display = “none”; document.getElementById(tabName).style.display = “block”; switch (tabName) { case “Overview”: document.getElementById(“btnOverview”).className = “active” document.getElementById(“btnSpecs”).className = “button” break; case “Specs”: document.getElementById(“btnSpecs”).className = “active” document.getElementById(“btnOverview”).className = “button” break; } } document.getElementById(“btnOverview”).click();