Wise Seating Premium Cooler Cushions for YETI TundrasSized to fit YETI and coolers with similar lid dimensions, these cushions provide camouflaged comfort with 500 Denier camouflage Cordura covering and three-inch, high-compression foam padding. Self-tapping stainless steel studs for cushion mounting included.35 Qt. Dimensions: 3" Height x 21" Length x 16" Width45 Qt. Dimensions: 3" Height x 25 1/2" Length x 16" Width50 Qt. Dimensions: 3" Height x 24" Length x 17 1/2" Width65 Qt. Dimensions: 3" Height x 30 1/2" Length x 17 3/4" Width75 Qt. Dimensions: 3" Height x 33 1/4" Length x 17 7/8" Width