Ultratherm insulation in body and lid for extended ice retention performance (4 days). Glide slide-and-lock horizontal locking telescoping handle technology provides better leverage and reduces the lifting load. Cool Riser Technology keeps contents cooler for longer by elevating away from hot surface. Features: aluminum telescoping handle and skid rails, stainless steel screws, tie-down loops, water resistant dry storage box, dual built-in bottle openers, 4 built-in cup holders, butler tray on handle, exterior storage pocket, and threaded drain plug. Oversized 10In. never-flat wheels tackle sand and other challenging terrain.