Eureka! Dual Temp 30/50 - Hybrid Rectangular Sleeping Bag Long dimensions 78x33x26.5 with Eureka! Rteq insulation Dual Temp rating 30/50 The shell fabric is made of 66D / 230T Diamond Matrix Polyester Ripstop, 66D / 210T Polyester Taffeta with warm to touch 75D/240T Peached Polyester lining. Trapezoidal footbox construction, with a full length draft tube, draft colloar, top drawcord. Warm-to-touch lining with vertical "S" quilting Anti-snag zipper stitchguard